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CO, USA
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Posted: 9/18/2024 12:29:12 AM EDT
[#1]
Quote HistoryOriginally Posted By Marksman14: Gee, I can't wait for another 250 posts of you saying the same thing. Getting tiresome, isn't it? |
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Posted: 9/18/2024 5:34:07 AM EDT
[#2]
Ignore the slide thread, and remember that this isn't GD.
Now I just have to wait for the BS 3 day period here in CO. Very clean, and nice welds. I've got the optic, rail, and brace already for it. I'm also planning the SBR route.  Attached File |
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Posted: 9/18/2024 10:09:50 AM EDT
[Last Edit: motoguy]
[#3]
I ordered the UTG Pro rail for my K model along with the #28 locker and some spare gray ejector springs. Oh, and a standard rear drum (vs the K model). I now need to find an optic, light and switch for it. I'm curious if there's an optic / mount combo that will let me retain use of the irons (under the optic), or if I'll just need to go with a quick detach mount.
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Posted: 9/18/2024 12:26:12 PM EDT
[Last Edit: Birddog1911]
[#4]
Quote HistoryOriginally Posted By motoguy: I ordered the UTG Pro rail for my K model along with the #28 locker and some spare gray ejector springs. Oh, and a standard rear drum (vs the K model). I now need to find an optic, light and switch for it. I'm curious if there's an optic / mount combo that will let me retain use of the irons (under the optic), or if I'll just need to go with a quick detach mount. I've heard, but haven't gotten mine mounted yet, that with the Titan Tactical single claw mount you can co-witness. I'll find out Saturday. I'm probably going to swap the drum as well, but with my eyes, it wouldn't matter. Hence the optic. They have mounts for just about every optic out there. https://www.titantacticaldesigns.com/product/mp5-single-claw-optic-mount-rmr-sro |
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Posted: 9/18/2024 5:41:18 PM EDT
[#5]
Quote HistoryOriginally Posted By Birddog1911: Ignore the slide thread, and remember that this isn't GD. Now I just have to wait for the BS 3 day period here in CO. Very clean, and nice welds. I've got the optic, rail, and brace already for it. I'm also planning the SBR route. https://www.ar15.com/media/mediaFiles/180161/20240918_032756_2_jpg-3325468.JPG My safety was ridiculously stiff, like holy shit! I bought and installed the magpul HK safety and it helped a lil bit, at least I can reach the damn thing now (I have big hands too!) |
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Posted: 9/18/2024 5:51:05 PM EDT
[#6]
Quote HistoryOriginally Posted By slowkota1: My safety was ridiculously stiff, like holy shit! I bought and installed the magpul HK safety and it helped a lil bit, at least I can reach the damn thing now (I have big hands too!) Quote HistoryOriginally Posted By slowkota1: Originally Posted By Birddog1911: Ignore the slide thread, and remember that this isn't GD. Now I just have to wait for the BS 3 day period here in CO. Very clean, and nice welds. I've got the optic, rail, and brace already for it. I'm also planning the SBR route. https://www.ar15.com/media/mediaFiles/180161/20240918_032756_2_jpg-3325468.JPG My safety was ridiculously stiff, like holy shit! I bought and installed the magpul HK safety and it helped a lil bit, at least I can reach the damn thing now (I have big hands too!) I also installed a magpul ambi safety on my AP5. It's nice but I wonder if it isn't causing my problems with my Timney trigger. |
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Posted: 9/20/2024 8:21:43 PM EDT
[#7]
Hmmm... I installed the RCM #28/80° locking piece... Turned my AP5-P into a jam-o-matic... FTEs every time
 I ordered an HK extractor and spring, as well as an HK ejector. Maybe that'll help, I dunno, runs fine with the OEM MKE locking piece though. I put the MKE locking piece back in for the time being.  |
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MO, USA
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Posted: 9/20/2024 10:29:06 PM EDT
[#8]
Quote HistoryOriginally Posted By Birddog1911: Ignore the slide thread, and remember that this isn't GD. Now I just have to wait for the BS 3 day period here in CO. Very clean, and nice welds. I've got the optic, rail, and brace already for it. I'm also planning the SBR route. https://www.ar15.com/media/mediaFiles/180161/20240918_032756_2_jpg-3325468.JPG Good looking K model. I think once I'm done with this full size I'll eventually get a K at some point. I've always wanted to try and roll my own but not currently set up to handle that. |
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USA
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Posted: 9/21/2024 6:57:29 AM EDT
[Last Edit: timkel]
[#9]
Quote HistoryOriginally Posted By slowkota1: Hmmm... I installed the RCM #28/80 locking piece... Turned my AP5-P into a jam-o-matic... FTEs every time I put the MKE locking piece back in for the time being. I had the same result. |
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Posted: 9/21/2024 7:22:41 AM EDT
[#10]
Quote HistoryOriginally Posted By slowkota1: Hmmm... I installed the RCM #28/80 locking piece... Turned my AP5-P into a jam-o-matic... FTEs every time I ordered an HK extractor and spring, as well as an HK ejector. Maybe that'll help, I dunno, runs fine with the OEM MKE locking piece though. I put the MKE locking piece back in for the time being. |
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USA
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Posted: 9/21/2024 8:17:22 AM EDT
[#11]
Quote HistoryOriginally Posted By motoguy: Were you running at suppressed? |
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Posted: 9/21/2024 9:21:28 AM EDT
[#12]
Quote HistoryOriginally Posted By motoguy: Were you running at suppressed? Quote HistoryOriginally Posted By motoguy: Originally Posted By slowkota1: Hmmm... I installed the RCM #28/80 locking piece... Turned my AP5-P into a jam-o-matic... FTEs every time I ordered an HK extractor and spring, as well as an HK ejector. Maybe that'll help, I dunno, runs fine with the OEM MKE locking piece though. I put the MKE locking piece back in for the time being. Yes. Omega 9k 
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Posted: 9/21/2024 9:24:04 AM EDT
[#13]
Quote HistoryOriginally Posted By timkel: I tried both on a MKE AP5-P. The factory installed locking piece was reliable suppressed or not. The RCM 80 degree locking piece was not. Weird ain't it. I've seen that the genuine HK extractor and ejector help cure failures on the AP5s... But with the original MKE LP, it didn't have any failures besides the very first mag ran through it. |
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USA
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Posted: 9/21/2024 9:58:31 AM EDT
[#14]
For my Ap5-p the 80 degree RCM locking piece worked somewhat with heavier loaded subsonic ammo only.
I switched to the 90 degree and now it runs subsonic as well as 124 ball ammo with no issues. This is suppressed with stock. The factory locking piece worked 100% as a pistol. I believe mine came with a 120 locking piece so I didn’t want to risk roller damage with suppressor and stock. The RCM locking pieces increased bolt gap for mine but both were still within spec. So far i’ve only had two issues and both can be fixed with simple parts swaps - thumb safety is too stiff and rear sight windage adjustment is stuck. |
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Posted: 9/21/2024 5:33:55 PM EDT
[#15]
 Attached FilePicked up my AP5-P today. 1st shots with it this afternoon. It works perfectly with 124gr and 147gr and the factory locking piece, suppressed and unsuppressed. I have a RCM 80deg locking piece in my growing bag of parts. Gonna hold off swapping it for a bit. |
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Posted: 9/21/2024 5:55:57 PM EDT
[Last Edit: GySgt_D]
[#16]
FWIW, after I installed a 100 degree locking piece in my suppressed AP5, the last (flat-nosed subsonic*) round in the magazine no longer jams.
*Federal 150gr Syntech |
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Posted: 9/21/2024 7:10:45 PM EDT
[#17]
Quote HistoryOriginally Posted By GySgt_D: FWIW, after I installed a 100 degree locking piece in my AP5, the last (flat-nosed subsonic) round in the magazine no longer jams. Mine eats 150gr Fed Syntech subs with the stock LP. I'm happy. Heard flatnose were hit or miss in these things. I reaaaaally don't want have to buy a bunch of different locking pieces. How bad is running suppressed on a P/K model with a factory LP? |
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PA, USA
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Posted: 9/21/2024 10:14:41 PM EDT
[#18]
HK ejector, extractor and extractor springs if you start having issues, these parts should solve all your problems should you have any. Then buy mags, lots of ammo and have a blast.
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Posted: 9/21/2024 10:51:44 PM EDT
[#19]
Quote HistoryOriginally Posted By arjohnson: HK ejector, extractor and extractor springs if you start having issues, these parts should solve all your problems should you have any. Then buy mags, lots of ammo and have a blast. Already on it! Made the order right at the range yesterday before I even packed up. heh  But does that solve the issue when switching to a #28/80 LP? Because thats the only thing that caused any issues. |
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PA, USA
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Posted: 9/22/2024 7:02:33 AM EDT
[Last Edit: arjohnson]
[#20]
Quote HistoryOriginally Posted By slowkota1: Already on it! Made the order right at the range yesterday before I even packed up. heh https://i.imgur.com/rycEutl.jpeg But does that solve the issue when switching to a #28/80 LP? Because thats the only thing that caused any issues. No, that will depend on if you use a suppressor or not. I use 80* locking piece when I use a suppressor and mine runs 100% with 147 gun subs. Mine does not run 100% with 80* locking piece unsuppressed, l’ll get FTF//FTE. I use factory locking piece if I shoot unsupressed. From what I seen some have issues with the 80* so you’ll have to see what works best for you. |
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Posted: 9/28/2024 7:58:08 AM EDT
[#21]
Quote HistoryOriginally Posted By slowkota1: Hmmm... I installed the RCM #28/80° locking piece... Turned my AP5-P into a jam-o-matic... FTEs every time I ordered an HK extractor and spring, as well as an HK ejector. Maybe that'll help, I dunno, runs fine with the OEM MKE locking piece though. I put the MKE locking piece back in for the time being. Did you check the bolt gap? After putting the 80* LP in my PTR 9KT, the gap was pretty far off. I ordered some rollers to get it back in spec. Then it would run with or without a suppressor. |
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Posted: 9/28/2024 8:09:04 AM EDT
[#22]
Quote HistoryOriginally Posted By slowkota1: Already on it! Made the order right at the range yesterday before I even packed up. heh https://i.imgur.com/rycEutl.jpeg But does that solve the issue when switching to a #28/80 LP? Because thats the only thing that caused any issues. Quote HistoryOriginally Posted By slowkota1: Originally Posted By arjohnson: HK ejector, extractor and extractor springs if you start having issues, these parts should solve all your problems should you have any. Then buy mags, lots of ammo and have a blast. Already on it! Made the order right at the range yesterday before I even packed up. heh https://i.imgur.com/rycEutl.jpeg But does that solve the issue when switching to a #28/80 LP? Because thats the only thing that caused any issues. Every time you swap a locking piece you need to check the bolt gap. It changed the gap when I put an 80* on my PTR 9KT. Try the 80* LP, get the correct rollers to get your bolt gap in line, then try it with/without a suppressor. Supposedly, shooting a K sized gun with heavy loads and a suppressor without swapping the factory locking piece can cause the rollers to expand at the wrong time creating roller marks in the receiver. I never wanted to verify that this is true. |
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Posted: 9/28/2024 8:49:36 AM EDT
[#23]
Quote HistoryOriginally Posted By mini14jac: Did you check the bolt gap? After putting the 80* LP in my PTR 9KT, the gap was pretty far off. I ordered some rollers to get it back in spec. Then it would run with or without a suppressor. Is your 80* LP a RCM one? Do you recall what rollers you used -2 or -4 and were they RCM or HK? Expensive way to do it, but I wonder if RCM E-bolt + RCM 80* LP would be the best way to shoot suppressed from the "K" variants. |
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Posted: 10/5/2024 6:37:14 PM EDT
[#24]
Quote HistoryOriginally Posted By mini14jac: Every time you swap a locking piece you need to check the bolt gap. It changed the gap when I put an 80* on my PTR 9KT. Try the 80* LP, get the correct rollers to get your bolt gap in line, then try it with/without a suppressor. Supposedly, shooting a K sized gun with heavy loads and a suppressor without swapping the factory locking piece can cause the rollers to expand at the wrong time creating roller marks in the receiver. I never wanted to verify that this is true. My bolt gap is: Factory MKE - .018 RCM #28 80° - .016 MKE is dead nuts HK spec, and the RCM is within spec. People are saying the MKE LP in the AP5P is 120°. Maybe I'll snatch up a 100 and a 90. But alls I do know, is that the RCM #28 80° that I have doesn't function in my gun... 124gr NATO, 147s and worst of all the 150 subs. |
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USA
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Posted: 10/6/2024 11:54:57 PM EDT
[#25]
I have 35 of them and they run, bashing Korean mags while playing with Turkish gun always amusing.
Quote HistoryOriginally Posted By Steiner43: I find the KCI mag bashing odd. All my 30s are MKE, but I’ve got two KCI 20s I’ve run a ton of rounds through with zero issues. Of course that’s based on my very limited sample size. |
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Posted: 10/7/2024 12:00:24 AM EDT
[#26]
I knew when I read the thread title this was a motoguy thread....
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Posted: 10/7/2024 8:28:08 AM EDT
[#27]
Quote HistoryOriginally Posted By jos51700: I knew when I read the thread title this was a motoguy thread.... |
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