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HK •• Clone •• photo and discussion thread (Page 22 of 23)
I have one, a factory PTR SBR: Already have a VFG on the way. That RDS was just a trial run, I absolutely need to figure out what RDS and WML will live on it, but the form 4 was only approved yesterday. |
Those who cannot remember the past are condemned to repeat it.
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Originally Posted By CaptShiess: I think it depends on your stock. With the A2 or the b&t folder it’s an excellent sight with full co-witness. I’ve also put in a g3 style rear sight so the “v” makes it so the rear sight is completely out of the way to just use the dot. Cool setup in some situations. Originally Posted By CaptShiess: Originally Posted By southerncross: Originally Posted By CaptShiess: https://i.postimg.cc/Yqn5z72q/IMG-5180.jpg How do you like the ultra low profile dot? I think it depends on your stock. With the A2 or the b&t folder it’s an excellent sight with full co-witness. I’ve also put in a g3 style rear sight so the “v” makes it so the rear sight is completely out of the way to just use the dot. Cool setup in some situations. I'm thinking about doing the same if I wind up getting an MP5 clone of some kind. Currently I've got a Spuhr stock and TA33 on my PTR91, and it works well. My AP53 has a low ring mount on pic rail for my Aimpoint Comp M3, and while it works, the dot is right at the top of the front sight hood. I'm debating getting another Spuhr stock for it and going to a standard height mount to clear the sights entirely, but the ultra low mount like you have is pretty interesting. I think I want to try one of those next. 
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TEAM GIMMICK 2026
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Originally Posted By USMCsilver: I'll play. HK & MAC5K. Both have RG packs. OCL Lithium & Cat MOB. https://i.imgur.com/NuFVELX.jpeg fancy. I gotta get some straight mags for the aesthetic. |
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OK, Im new to the roller delay system and clones of the HK guns. Bought a MAC5. Put a RB frt in it. Probably should have test fired it first, but I didnt. Also put in the paperwork to SBR first too lol. Got the chance to fire it today. First mag went perfect in both semi and frt mode. Subsequent mags, less than perfect. Multiple times per mag, it would extract but fail to eject the empty, jamming it up. Stripped it at home, looked on line for causes. Extractor number 1 answer. Watched video on how to check Extractor tension. Hmmmm. Seems its hit or miss whether the Extractor claw snaps completely over the rim. It will snap in to the bolt face and sometimes the Extractor just barely has a grip on the rim, others its fully on. Since the brass isn't being left in the chamber, im thinking the Extractor is out of spec. Just out of curiosity, I put 10 rounds in a mag and hand cycled it through, making sure the bolt got full speed travel on every cycle. I did this several times, varying the speed that I opened the action. Didnt matter. Yanking the bolt hard resulted in rounds going about 5 feet except for the ones that remained in the action and tied things up. Cycling the action slowly resulted in rounds that popped out to the right less than a foot, but did clear the ejection port. Occasionly, looking in the the ejection port as I slowly pulled the charging handle rearward, I could watch the round be pulled out of the chamber, remain attached to the bolt face, but when it hit the Extractor, it just popped loose and spun around while remaining in the action, jamming things up. I did this to eliminate binding components slowing the action as a cause. So, am I on the right track with a bad Extractor? Its really the only thing that makes sense to me, but Im a complete noon with these things, and worse, a noon with a clone of one of these things.  |
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Originally Posted By Biggus_Dickus: OK, Im new to the roller delay system and clones of the HK guns. Bought a MAC5. Put a RB frt in it. Probably should have test fired it first, but I didnt. Also put in the paperwork to SBR first too lol. Got the chance to fire it today. First mag went perfect in both semi and frt mode. Subsequent mags, less than perfect. Multiple times per mag, it would extract but fail to eject the empty, jamming it up. Stripped it at home, looked on line for causes. Extractor number 1 answer. Watched video on how to check Extractor tension. Hmmmm. Seems its hit or miss whether the Extractor claw snaps completely over the rim. It will snap in to the bolt face and sometimes the Extractor just barely has a grip on the rim, others its fully on. Since the brass isn't being left in the chamber, im thinking the Extractor is out of spec. Just out of curiosity, I put 10 rounds in a mag and hand cycled it through, making sure the bolt got full speed travel on every cycle. I did this several times, varying the speed that I opened the action. Didnt matter. Yanking the bolt hard resulted in rounds going about 5 feet except for the ones that remained in the action and tied things up. Cycling the action slowly resulted in rounds that popped out to the right less than a foot, but did clear the ejection port. Occasionly, looking in the the ejection port as I slowly pulled the charging handle rearward, I could watch the round be pulled out of the chamber, remain attached to the bolt face, but when it hit the Extractor, it just popped loose and spun around while remaining in the action, jamming things up. I did this to eliminate binding components slowing the action as a cause. So, am I on the right track with a bad Extractor? Its really the only thing that makes sense to me, but Im a complete noon with these things, and worse, a noon with a clone of one of these things. I’d try a new ejector, preferably HK. |
“I don’t want a valuable life lesson, I just want an ice cream.”
Space Corps Directive 196156: 'Any officer caught sniffing the saddle of the exercise bicycle in the women's gym will be discharged without trial.'
Space Corps Directive 196156: 'Any officer caught sniffing the saddle of the exercise bicycle in the women's gym will be discharged without trial.'
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Originally Posted By FishKepr: I'd try a new ejector, preferably HK. Originally Posted By FishKepr: Originally Posted By Biggus_Dickus: OK, Im new to the roller delay system and clones of the HK guns. Bought a MAC5. Put a RB frt in it. Probably should have test fired it first, but I didnt. Also put in the paperwork to SBR first too lol. Got the chance to fire it today. First mag went perfect in both semi and frt mode. Subsequent mags, less than perfect. Multiple times per mag, it would extract but fail to eject the empty, jamming it up. Stripped it at home, looked on line for causes. Extractor number 1 answer. Watched video on how to check Extractor tension. Hmmmm. Seems its hit or miss whether the Extractor claw snaps completely over the rim. It will snap in to the bolt face and sometimes the Extractor just barely has a grip on the rim, others its fully on. Since the brass isn't being left in the chamber, im thinking the Extractor is out of spec. Just out of curiosity, I put 10 rounds in a mag and hand cycled it through, making sure the bolt got full speed travel on every cycle. I did this several times, varying the speed that I opened the action. Didnt matter. Yanking the bolt hard resulted in rounds going about 5 feet except for the ones that remained in the action and tied things up. Cycling the action slowly resulted in rounds that popped out to the right less than a foot, but did clear the ejection port. Occasionly, looking in the the ejection port as I slowly pulled the charging handle rearward, I could watch the round be pulled out of the chamber, remain attached to the bolt face, but when it hit the Extractor, it just popped loose and spun around while remaining in the action, jamming things up. I did this to eliminate binding components slowing the action as a cause. So, am I on the right track with a bad Extractor? Its really the only thing that makes sense to me, but Im a complete noon with these things, and worse, a noon with a clone of one of these things. I'd try a new ejector, preferably HK. |
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Originally Posted By Biggus_Dickus: OK, Im new to the roller delay system and clones of the HK guns. Bought a MAC5. Put a RB frt in it. Probably should have test fired it first, but I didnt. Also put in the paperwork to SBR first too lol. Got the chance to fire it today. First mag went perfect in both semi and frt mode. Subsequent mags, less than perfect. Multiple times per mag, it would extract but fail to eject the empty, jamming it up. Stripped it at home, looked on line for causes. Extractor number 1 answer. Watched video on how to check Extractor tension. Hmmmm. Seems its hit or miss whether the Extractor claw snaps completely over the rim. It will snap in to the bolt face and sometimes the Extractor just barely has a grip on the rim, others its fully on. Since the brass isn't being left in the chamber, im thinking the Extractor is out of spec. Just out of curiosity, I put 10 rounds in a mag and hand cycled it through, making sure the bolt got full speed travel on every cycle. I did this several times, varying the speed that I opened the action. Didnt matter. Yanking the bolt hard resulted in rounds going about 5 feet except for the ones that remained in the action and tied things up. Cycling the action slowly resulted in rounds that popped out to the right less than a foot, but did clear the ejection port. Occasionly, looking in the the ejection port as I slowly pulled the charging handle rearward, I could watch the round be pulled out of the chamber, remain attached to the bolt face, but when it hit the Extractor, it just popped loose and spun around while remaining in the action, jamming things up. I did this to eliminate binding components slowing the action as a cause. So, am I on the right track with a bad Extractor? Its really the only thing that makes sense to me, but Im a complete noon with these things, and worse, a noon with a clone of one of these things. Did you try just swapping a new extractor spring in it? That's the weak spot in HKs, particularly the mp5. Before you go putting new extractors and ejectors in, try the cheap part first. |
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Originally Posted By TheFaz: Did you try just swapping a new extractor spring in it? That's the weak spot in HKs, particularly the mp5. Before you go putting new extractors and ejectors in, try the cheap part first. Originally Posted By TheFaz: Originally Posted By Biggus_Dickus: OK, Im new to the roller delay system and clones of the HK guns. Bought a MAC5. Put a RB frt in it. Probably should have test fired it first, but I didnt. Also put in the paperwork to SBR first too lol. Got the chance to fire it today. First mag went perfect in both semi and frt mode. Subsequent mags, less than perfect. Multiple times per mag, it would extract but fail to eject the empty, jamming it up. Stripped it at home, looked on line for causes. Extractor number 1 answer. Watched video on how to check Extractor tension. Hmmmm. Seems its hit or miss whether the Extractor claw snaps completely over the rim. It will snap in to the bolt face and sometimes the Extractor just barely has a grip on the rim, others its fully on. Since the brass isn't being left in the chamber, im thinking the Extractor is out of spec. Just out of curiosity, I put 10 rounds in a mag and hand cycled it through, making sure the bolt got full speed travel on every cycle. I did this several times, varying the speed that I opened the action. Didnt matter. Yanking the bolt hard resulted in rounds going about 5 feet except for the ones that remained in the action and tied things up. Cycling the action slowly resulted in rounds that popped out to the right less than a foot, but did clear the ejection port. Occasionly, looking in the the ejection port as I slowly pulled the charging handle rearward, I could watch the round be pulled out of the chamber, remain attached to the bolt face, but when it hit the Extractor, it just popped loose and spun around while remaining in the action, jamming things up. I did this to eliminate binding components slowing the action as a cause. So, am I on the right track with a bad Extractor? Its really the only thing that makes sense to me, but Im a complete noon with these things, and worse, a noon with a clone of one of these things. Did you try just swapping a new extractor spring in it? That's the weak spot in HKs, particularly the mp5. Before you go putting new extractors and ejectors in, try the cheap part first. I already ordered H&K made ejector, extractor and extractor spring. Hoping one or all takes care of the issue. That first mag ran great and im hooked. Ill get it going if it kills me lol Edit: Saw a video of a guy having issues getting his RB FRT to run in a clone. He noticed that the FRT cassette was kind of loose in the housing. Side to side was tight, but with the safety lever installed, tge entire cassette could rock, pivoting around the safety lever. Took mine apart, and sure enough, quite a bit of seesawing around the safety lever. Used some folded up tinfoil and made shims and put them front and back, building up thickness to where there was no rocking of the cassette and the safety lever doesnt drag (got the shims a little thick and when assembled, there was a noticeable drag when rotating the safety). With the new ejector, and extractor and spring that is in route, im hoping this thing will run.  Edit 2 After shimming the trigger pack to no movement, I redid the hand cycled test. Before, it would fail to eject at least 2 out of 10. Did 10 rounds 3 times, varying the speed from slow to fast. No failures to eject. Loaded a full 30 rounds. Hand cycled them as fast as I could pull the charging handle back. No failures and all were ejected with good distance. Will be a couple of days before I can actually fire it (just started prep for colonoscopy tomorrow morning. Fun) Ill update when I do. |
| Oops, I totally missed that you had an FRT. Does it have the ejector as part of a drop-in unit? Not familiar with them. |
“I don’t want a valuable life lesson, I just want an ice cream.”
Space Corps Directive 196156: 'Any officer caught sniffing the saddle of the exercise bicycle in the women's gym will be discharged without trial.'
Space Corps Directive 196156: 'Any officer caught sniffing the saddle of the exercise bicycle in the women's gym will be discharged without trial.'
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Originally Posted By FishKepr: Oops, I totally missed that you had an FRT. Does it have the ejector as part of a drop-in unit? Not familiar with them. |
Friendly Neighborhood Extremist
Joined:
Sep 2023
Posts:
651
EE: 100% (2)
KS, USA
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Originally Posted By Biggus_Dickus: The first video I watched trying to figure things out was how to check the Extractor spring for proper tension. The spring passes with flying colors. It is very strong. I already ordered H&K made ejector, extractor and extractor spring. Hoping one or all takes care of the issue. That first mag ran great and im hooked. Ill get it going if it kills me lol Edit: Saw a video of a guy having issues getting his RB FRT to run in a clone. He noticed that the FRT cassette was kind of loose in the housing. Side to side was tight, but with the safety lever installed, tge entire cassette could rock, pivoting around the safety lever. Took mine apart, and sure enough, quite a bit of seesawing around the safety lever. Used some folded up tinfoil and made shims and put them front and back, building up thickness to where there was no rocking of the cassette and the safety lever doesnt drag (got the shims a little thick and when assembled, there was a noticeable drag when rotating the safety). With the new ejector, and extractor and spring that is in route, im hoping this thing will run. Edit 2 After shimming the trigger pack to no movement, I redid the hand cycled test. Before, it would fail to eject at least 2 out of 10. Did 10 rounds 3 times, varying the speed from slow to fast. No failures to eject. Loaded a full 30 rounds. Hand cycled them as fast as I could pull the charging handle back. No failures and all were ejected with good distance. Will be a couple of days before I can actually fire it (just started prep for colonoscopy tomorrow morning. Fun) Ill update when I do. Originally Posted By Biggus_Dickus: Originally Posted By TheFaz: Originally Posted By Biggus_Dickus: OK, Im new to the roller delay system and clones of the HK guns. Bought a MAC5. Put a RB frt in it. Probably should have test fired it first, but I didnt. Also put in the paperwork to SBR first too lol. Got the chance to fire it today. First mag went perfect in both semi and frt mode. Subsequent mags, less than perfect. Multiple times per mag, it would extract but fail to eject the empty, jamming it up. Stripped it at home, looked on line for causes. Extractor number 1 answer. Watched video on how to check Extractor tension. Hmmmm. Seems its hit or miss whether the Extractor claw snaps completely over the rim. It will snap in to the bolt face and sometimes the Extractor just barely has a grip on the rim, others its fully on. Since the brass isn't being left in the chamber, im thinking the Extractor is out of spec. Just out of curiosity, I put 10 rounds in a mag and hand cycled it through, making sure the bolt got full speed travel on every cycle. I did this several times, varying the speed that I opened the action. Didnt matter. Yanking the bolt hard resulted in rounds going about 5 feet except for the ones that remained in the action and tied things up. Cycling the action slowly resulted in rounds that popped out to the right less than a foot, but did clear the ejection port. Occasionly, looking in the the ejection port as I slowly pulled the charging handle rearward, I could watch the round be pulled out of the chamber, remain attached to the bolt face, but when it hit the Extractor, it just popped loose and spun around while remaining in the action, jamming things up. I did this to eliminate binding components slowing the action as a cause. So, am I on the right track with a bad Extractor? Its really the only thing that makes sense to me, but Im a complete noon with these things, and worse, a noon with a clone of one of these things. Did you try just swapping a new extractor spring in it? That's the weak spot in HKs, particularly the mp5. Before you go putting new extractors and ejectors in, try the cheap part first. I already ordered H&K made ejector, extractor and extractor spring. Hoping one or all takes care of the issue. That first mag ran great and im hooked. Ill get it going if it kills me lol Edit: Saw a video of a guy having issues getting his RB FRT to run in a clone. He noticed that the FRT cassette was kind of loose in the housing. Side to side was tight, but with the safety lever installed, tge entire cassette could rock, pivoting around the safety lever. Took mine apart, and sure enough, quite a bit of seesawing around the safety lever. Used some folded up tinfoil and made shims and put them front and back, building up thickness to where there was no rocking of the cassette and the safety lever doesnt drag (got the shims a little thick and when assembled, there was a noticeable drag when rotating the safety). With the new ejector, and extractor and spring that is in route, im hoping this thing will run. Edit 2 After shimming the trigger pack to no movement, I redid the hand cycled test. Before, it would fail to eject at least 2 out of 10. Did 10 rounds 3 times, varying the speed from slow to fast. No failures to eject. Loaded a full 30 rounds. Hand cycled them as fast as I could pull the charging handle back. No failures and all were ejected with good distance. Will be a couple of days before I can actually fire it (just started prep for colonoscopy tomorrow morning. Fun) Ill update when I do. Tried some hollow points. One 30 round mag of 124 grain HST. My son did a mag dump, and it cycled 28 rounds. The 29th round failed to feed and pushed the bullet slightly back in the case. He pulled the charging handle and ejected it before I got a look at what stopped it. Magazine maybe, or just dont expect 100% reliability with hollow points? Edit After some research, it is indeed a magazine problem. For the benefit of anyone who, like me, doesnt already know this, apparently all the clones are made with 1st generation type magazines. Early on, H&K wasnt concerned with feeding hollowpoints. Later on, law enforcement types wanted to use the MP5 with hollowpoints, so 2nd gen mags have a redesigned follower and feed lips. If you want reliability with hollowpoints with your MP5, German made H&K mags are likely the best option. |
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Should have my paper work back soon. Does anyone have a lead on someone that makes a handguard/foregrip similar to this but for a full sized? Attached File |
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Originally Posted By Dolor: Should have my paper work back soon. Does anyone have a lead on someone that makes a handguard/foregrip similar to this but for a full sized? https://www.ar15.com/media/mediaFiles/418820/VFG_png-3790628.JPG https://hkparts.net/handguards-foregrips/hk-mp5-hk94-vertical-k-grip-adapter/ 
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Originally Posted By D_Man: If you combine that K grip with one of these spacers you can use it on the full size: https://hkparts.net/handguards-foregrips/hk-mp5-hk94-vertical-k-grip-adapter/ https://cdn11.bigcommerce.com/s-vxfkqern53/images/stencil/608x608/products/10687/45800/HK-Vertical-K-Grip-Adapter-For-HK-MP5-HK94-4-copy__31856.1723821322.jpg ooh I see now. I was wondering why they heck they don't make them haha. Now a question if I just get the VFG and keep my B&T rail or do the spacer VFG combo. |
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Originally Posted By Biggus_Dickus: Ok, put the German ejector and extractor in it and its runs like a sewing machine. Put about 250 rounds through it with no issues...except 1. Tried some hollow points. One 30 round mag of 124 grain HST. My son did a mag dump, and it cycled 28 rounds. The 29th round failed to feed and pushed the bullet slightly back in the case. He pulled the charging handle and ejected it before I got a look at what stopped it. Magazine maybe, or just dont expect 100% reliability with hollow points? Edit After some research, it is indeed a magazine problem. For the benefit of anyone who, like me, doesnt already know this, apparently all the clones are made with 1st generation type magazines. Early on, H&K wasnt concerned with feeding hollowpoints. Later on, law enforcement types wanted to use the MP5 with hollowpoints, so 2nd gen mags have a redesigned follower and feed lips. If you want reliability with hollowpoints with your MP5, German made H&K mags are likely the best option. Some have reported improved functionality with non-HK magazines after installing German or XP springs. I picked up a a set of Wolff XP springs but haven’t tried it yet, mostly because disassembling the magazines are a bit of a pain and I’ve been procrastinating.
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“I don’t want a valuable life lesson, I just want an ice cream.”
Space Corps Directive 196156: 'Any officer caught sniffing the saddle of the exercise bicycle in the women's gym will be discharged without trial.'
Space Corps Directive 196156: 'Any officer caught sniffing the saddle of the exercise bicycle in the women's gym will be discharged without trial.'
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Originally Posted By SSeric02: My B&T folding stock adapter arrived today, matched right up to the UMP stock, and slid right onto my AP5 receiver without issue. LOP is a tad longer than the A3F stock. Yeah, those UMP stocks are crazy long compared to most. Guess HK had to stretch it some to fit over the UMP ejection port. |
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Originally Posted By Dolor: ooh I see now. I was wondering why they heck they don't make them haha. Now a question if I just get the VFG and keep my B&T rail or do the spacer VFG combo. A3 Industries makes MLOK and pic rail versions of those VFGs. I've got one on a 5" AR 300BO and one for my AP53.
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TEAM GIMMICK FOREVER
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Originally Posted By southerncross: A3 Industries makes MLOK and pic rail versions of those VFGs. I've got one on a 5" AR 300BO and one for my AP53. https://www.ar15.com/media/mediaFiles/157261/1343-3781118.jpg Yeah but they're expensive. HK parts has some for like $20. Probably going to go that route. |
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Originally Posted By chase45: Im generally more of a purist But uh I guess it feels good to sin once in awhile? https://i.imgur.com/0DxbqAyh.jpg https://i.imgur.com/dLY9BR9h.jpg |
Know Guns, Know Peace, Know Safety...No Guns, No Peace, No Safety
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Originally Posted By chase45: Im generally more of a purist But uh I guess it feels good to sin once in awhile? https://i.imgur.com/0DxbqAyh.jpg https://i.imgur.com/dLY9BR9h.jpg What folding adapter? |
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Originally Posted By brodband8: What folding adapter? Whole assembly from A3 industries? I had never heard of them but started looking for stock options when I ordered the rest of the parts Took some mallet compliance to seat the first time Extremely solid for a K stock. Near zero wobble I wish it had a more traditional sling mount option but other than that its really nice They also make other adapters so I could move this to something else. Going to see if I can maybe get an adapter for my 53 but it needs the buffer so idk there |
Battle Of West Appalachia Survivor
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Originally Posted By chase45: Im generally more of a purist But uh I guess it feels good to sin once in awhile? https://i.imgur.com/0DxbqAyh.jpg https://i.imgur.com/dLY9BR9h.jpg hot, mix of old and new. Somehow it works and it works well. |
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Love that RAL MP5. That 416 is awesome too. 
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MKE AP5 SD w/ Exigent Defense RICO309 directly threaded. Stupid quiet with subsonic ammo. Attached File C'mon Form 1 approval |
Know Guns, Know Peace, Know Safety...No Guns, No Peace, No Safety
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Attached File Attached File Form 1 approved |
Your boos mean nothing, I've seen what makes you cheer
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Originally Posted By vanrichten: Just got my latest stamp approved. MP5K with a rare breed FRT https://www.ar15.com/media/mediaFiles/90539/IMG_2862-3799419.jpg Nice! The UMP stock is great, isn't it!? |
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Form 1 SBR approved today. Attached File Attached File |
Know Guns, Know Peace, Know Safety...No Guns, No Peace, No Safety
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Attached File PTR-91, a G3 clone was one of my grail guns. This thing rocks. |
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Finally got my form 1 approved and could put it all together. Oh yeah! Attached File |
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Originally Posted By skullbox: https://virtualgunvault.com/shared_photo_view.php?token=cae2673dcf47428d39adcc9d4f6c1ca65c1bf0b8c867992297e967f3f17f6de3&photo_id=164&size=full https://virtualgunvault.com/shared_photo_view.php?token=c4211ceb5ce1afd126b5225c006b7ed73e96efdfef99a4562a53aa45bdbf6394&photo_id=165&size=full Top: A POF MP5 converted to a proper SD. Bottom: A DJ Getz SP-89 Nice. Who did your SD conversion? |
HK •• Clone •• photo and discussion thread (Page 22 of 23)
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