User Panel
Yes, Promags will work in an RRA system (and usually quite well, too)... You can use mod. uzi mags (no BHO), or Promags, Colt mags, or the new C-Products mags when they come out. (all have BHO). |
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I have a RRA 9mm and the 3 brand new promags I used yesterday in a match were crap. I don't think I shot a single stage without a malfunction. Fail to Feed, double feeds, follower/spring gets stuck, all happened in all 3 mags. All of the folks on my squad who have used ProMags have had a similar experience. Maybe they're good for range use only, but I would not recommend them as your primary magazines. When (if) the Cproducts mags ship, the promags will live at the bottom of my range bag. Fortunately I only paid $14 each for them at Aim Surplus. |
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I looked through the FAQ and didn't quite find what I needed.
I currently have an AR lower that uses the 9mm buffer, and a RRA 2-stage trigger. I'd like to use this lower for both .223 Rem and 9mm Luger. Do I just need: 9mm Upper magwell block If so, which magwell blocks are available and are they compatible with any 9mm upper (bolt carrier group, barrel, upper, etc...)? Say if I bought the RRA 9mm upper, can I use any magwell block? I'd like a magwell block that drops in (no set-screws, drills, friction fit, etc...) and is heavy-duty. I'd prefer to use the cheapest available mags possible. Any ideas? Oly's Glock 9mm ARs supposedly aren't sold as parts and can only be sold as a complete rifle. |
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I new to this forum and there is so much to catch up on I really have'nt. I read what squibload said about the wrong question so I'll phrase mine differently. I have on order, with only the complete lower at my FFL. It's a 9mm threaded short barrrel (it's considered a pistol I'm told) from RRA. The upper is from Gemtech and is the The Trinity System.
http://i3.tinypic.com/4ddimib.jpg That is a suppressor with the handgards designed for 9mm. Any comments are welcome,including negative. Thanks, onetros. |
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CAR-10 AR10 Carbine Buffers => ar15.com/forums/topic.html?b=7&f=120&t=229073
.45 ACP and 9mmQ Heavy Buffers => ar15.com/forums/topic.html?b=7&f=25&t=263131 |
I have a few questions about the oly bolt assembly. what is the purpose of the firing pin spring? How far should the firing pin be in before the retaining pin goes in? Also, when the spring and firing pin are in place and the retaining pin is in, should the firing pin still be able to come out? last question.. can i use the same type of retaining pin on the 9mm and the .223?
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Can any one suggest a supllier of a 9mm " rotary" bolt (as in a 223 AR ) , NOT a stadard blowback type.
Thanks a lot |
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I am looking for a socom mag block for my 9mm AR build that I am working on anyone know where I can get one?
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When I go to their website, I get: Directory Listing Denied This Virtual Directory does not allow contents to be listed. See: Last known SOCOM Mfg website |
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HAMMER CONFUSION:
I can't figure out what the actual scoop is on this. If the bolt is ramped, will any AR-15 hammer work? |
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Fellas, I want to apologize, back when I wrote up most that stuff there was little to any info avaialble on 9mm uppers, and there were all of 2-3 mag black options total between Oly and Colt style uppers. Since that time there have been almost a dozen different mag blocks, and some of those listed are not even available anymore- lots of changes.
In fact, I sold my 9mm upper and VMHytech block almost a year ago (and kicking myself now, of course, with current ammo prices!). To answer the hammer questions posted just above, if you ramp your bolt a DPMS AR-15 "no notch" .223 hammer will work, an AR-15 "notched" face .223 hammer *should* work (but I have no way to verify) and a 9mm hammer most likely will not work reliably, at least based on reports from long ago. An M-16 hammer will work just fine *but* you then have an M-16 part in your gun, which some view as bad juju, and you shoudl grind off the littel 'tail' on the hammer jsut to be sure you are non-NFA compliant. I had a DPMS "no notch" hammer and a ramped bolt and it worked just fine. Here is the supposed issue as to why the 9mm hammer will not work properly. The 9mm hammer was developed by Rock River to deal with the issue of violent hammer reset- only a 1/4" of 9mm bolt movement resets the hammer with an unmodified 9mm bolt and an AR-15/M-16 hammer. In fact, the unmodified 9mm bolt was known in several memebers guns to completley bind up if used with a 'notched' AR-15 hammer. So Rock River came out with a hammer that reset a little less violently due to the profile of the face, and that would definitely not hang up. In a nutsheel, that 9mm hammer was deisgned to work with the profiel of the underside of the 9mm bolt. Well, then someo got the bright idea that you could "ramp" the underside of the 9mm bolt so that you could use and AR-15 or M-16 ahmmer that was in your gun, and that the hammer reset was over the course of 1", which is much easier on the hammer pin and lower parts in general. Groovy. Except once you ramp the underside of the 9mm bolt, you have now changed the geometry of the bolt to hammer interface....and that shallow ramping means a 9mm hammer now has *just barely* enough contact throught the bolt recoil stroke to reset. What many members foudn is that if their 9mm upper and their lower had some looseness or play between them, there was just enoguh slop to allow the 9mm bolt to not press down the 9mm hammer quite enough, and the hammer would not reset, it woudl instead follow the 9mm bolt i.e. 'hammer follow' where it does not recokc so it won't fire when the trigger is pulled. Some guys, esepcially those who had a 9mm upper that was very snug to a lower did not have an issue. But in the end, the whole poitn of bolt ramping is so that you *don't have to wswitch to a dedicated 9mm hammer* and that to boot the 9mm upper will not be so hard on your AR-15 or M-16 hammer and pins. So does that clear things up? |
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Dawg180, thanks for all the information you have posted. It is a big help to those of us looking to get into the 9mm game.
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Do RRA/Colt/Oly 9mm upper parts use standard AR upper receiver? That is, can I move those parts to another upper receive, say, DPMS' Flattop LoPro upper receiver.
And without the oversized brass deflector, where would all the brass fly? |
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That which does not kill you will come back to finish you later.
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No problem. I realize my FAQ is pretty fragmented and somehwat out of date at this time, but you gotta remeber that before I posted it there was NOTHING at all really available for info so I had to gather it all peicemeal...hence the 'may or may not work' answers in some parts. |
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The upper receivers are essentially the same. The main difference is they typically do not have a gas tube hole in the front of the receiver, but it will function fine with the hole there, except a litle gas and podwer may vent forward. if that really bothers you I know guys have tapped and threaded a flush fit allen head screw or even just JB Weld plugged it. In addition Olympic arms uppers have a hole drilled for an axle pin that has the ejector spring mounted onto it- the whole mechanism 'bridges' across the lower portion and the bootl carrier passes over it IIRC. You can drill the hole fairly easily on your own and install the axle/spring- there is a diagram around here somewhere with the measurement for locating the hole. If you remove it the upper will function just fine in any other caliber, except for the holes in either side. The brass would most likely fly back at somewhere in the 3:00 to 5:00 position IIRC. Should not be an issue unless you are shooting lefty. [ETA] I'll try to check this thread on a semi-regular basis to answer questions. Although I don't have an upper anymore, I was aroudn during the period when SBR711, Quarterbore, and Forest were all posting 'new' info on the various systems to figure out what worked and what didn't, and at least some of that is still stuck in my brain. |
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This is an oldie, but since no one has specifically answered it yet, I'll take a shot.
That said, bear in mind what I'm about to say is based on research for a 9mm build, but not on having actually done it.
Any mag block for the Colt system - not Oly.
I'm looking at the VM Hy-Tech block, listed (but out of stock) at Brownells. It allows use of unmodified UZI mags, which are available for $10 each in quantity from DS Arms. |
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Can the 9mm case deflector & ejection port door be put on a 223 upper? Is that all that's required to "convert" a 223 upper to a 9mm upper? Aside from having the gas tube hole up front.
I have an old A1 upper without a case deflector or forward assist that I'd like to use for a 9mm project, ala the Colt 9mm SMG, but seems that everyone is only selling A2 & Flat Top style 9mm uppers. |
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Yes, they can. If the gas hole blows too much crap out of it just fill it in with some high temp gasket compound to plug it. |
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Great system from Gemtech! It's actually called the Talon though. Trinity is their 9mm suppressor. Both are great from what I understand. I have shot the Trinity and I know a class 3 manufacturer who really likes the Talon upper. Just be sure not to put it on a rifle lower if you're not registered for SBR!!!! I'm hoping to purchase that set up down the road and attach it to a pistol lower as Washington does not allow civilians SBR's. hat Nice choice for sure! Look forward to hearing your feedback on the system! Mike D. |
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so where is the best place to have the "bolt-ramp" work done?
what does it entail? pics to compare ramped vs nonramped? thanks |
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Found the answer (Yes, but don't use it when your ass is on the line). |
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Will the Chip McCormick Super Match Curved Single Stage Trigger Group work with an RRA 9mm BCG?
I've been contemplating buying one for my first 9mm build and a few of the images on here refuse to load. http://www.midwayusa.com/mediasvr.dll/highresimage?saleitemid=977681 Edit: No it will not. |
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tag
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ARFCOM.....Time well wasted.
Originally Posted By MrClean4Hire: BTW I wasted post 25k telling you how to catch teh ghey. |
I'm curious about the same thing. I'm ASSUMING from what I'm reading here that if you ramp your bolt properly, the shape of the 9mm bolt once ramped should mimick that of the 5.56mm bolt carrier, so you should be able to use ANY AR-15 .223 hammer with the 9mm upper. Would that be a correct statement? I've tried in several threads to find someone who could say, "Yes, I have used xxx trigger with yyy 9mm bolt and it has functioned fine", but it seems like few people want to commit to a statement. It's more like, "Try it at your own risk". |
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I too would love an answer to the above question, one thing that was stopping me from buying a 9mm upper is the fact that I read on the RRA site that you have to use a mil trigger and hammer.
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can someone explain this more? |
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Anyone know where I can get a 9mm muzzle brake for a threaded barrel? I've been searching for weeks now and can't find anything anywhere.
Thanks. |
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Brake? No. Only know of the Smith Vortex flash suppressor. Just curious, but why a brake? The 9 mil has almost no recoil as it is.
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Servant or Citizen? Don't let anyone choose for you!
Thanks to all our service Men and Women for defending my freedoms. |
I would like an answer to this also. Being in CT I need to keep my AR AWB compliant. Thanks Joshua |
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What mag is that? |
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www.drudgereport.com
www.arizonashooting.com www.tannerite.com |
Who sells 9mm ramped bolts?
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Question.....will a Knight RAS work on a RRA 9mm barrel?
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Only 1 source for ramped bolt sales, that is "Ken Elmore",, sell a factory Colt bolt he ramps and intstall tungsten for more more weight --> $$$$$$$ Buy a bolt from ASA, RRA, or Garrison, and have it ramped and only have maybe 1/2 of what Ken sell for, no need for tungsten weight, you can add more buffer weight for a lot less $$. **********************
This thing ?? Looks like carbine handguard replacement, so long as you fasten the barrel to the upper with std barrel nut, and cap at front, go for it. |
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Is there a general preference between 25rd and 32rd Uzi mags for 9mm ARs?
Also, if I do a Colt style build can I buy any manufacturers 9mm barrel? |
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The reason for the question is, the RAS because of it's means of attachment is less forgiving then the RIS model when it comes to barrel diameter....and I don't know what the barrel diameter is on a 9mm AR barrel. |
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The RAS dropped right onto my RRA 9mm upper and locked right in. It went on easier than a different RAS installed on my DPMS .22 upper and a whole lot easier than the Armalite rail went on my AR-10 carbine.
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ADCO also sells a ramped RRA bolt. Or just send yours to member MGP and have him do it. He ramped mine and sent it back to me the same day he got it. |
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"Is life so dear or peace so sweet as to be purchased at the price of chains and slavery? Forbid it, Almighty God! I know not what course others may take, but as for me, give me liberty or give me death!" —Patrick Henry
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ADCO will also ramp your 9mm bolt for a very reasonable fee, and the service is generally one or two days. |
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CAR-10 AR10 Carbine Buffers => ar15.com/forums/topic.html?b=7&f=120&t=229073
9mmQ Buffers => ar15.com/forums/topic.html?b=7&f=25&t=263131 |
so i have a RRA 9mm on order but im having a hard time figuring out what mags fit. Also where is a good place to order them from?
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C Products is the way to go. I recommend getting them from 44MAG. |
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"Is life so dear or peace so sweet as to be purchased at the price of chains and slavery? Forbid it, Almighty God! I know not what course others may take, but as for me, give me liberty or give me death!" —Patrick Henry
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Is it cheaper to buy the assembled RRA 9mm upper or purchase the upper piece by piece?
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I have found a place that has a flattop Oly Arms 9mm upper. The guy says that the complete guns they have use the Glock mags and he doesn't know if this Oly Arms upper uses Sten mags or Glock mags. My question is, does Oly Arms make an upper for glock mags and an upper for Sten mags or are all the Oly Arms 9mm uppers the same?
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Do 9mm upper come in midlength or just CAR length gas systems.
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9mm ARs use blowback, so there is no gas system. RRA sells uppers with the front sight post in both the carbine and mid length position. |
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Hey all,
if no one has tried lately - I called oly this last week (2-5-08) to try and get a 9mm lower and they said "we dont offer them separately" on another note I was looking at machining a 0% lower to us a a glock mag and . It appears that when the glock mag inserted into a standard lower is going to be close to the grip angle to function. Posting the latter in the build your own area also. Thanks for all of the great infromation: Fordf150 |
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Are the Rock River dedicated 9mm lowers available from the factory as an SBR?
Thanks! Sid |
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I know adco has factory 5.56 SBR's, but NO 9MM. If that's any indication.
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