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Posted: 10/15/2009 12:39:09 AM EDT
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Ive got a RRA colt style mag block, I've also got 5 promag magazines that dont lock into the magblock... now i know they are crappy mags but they do lock up when loaded... havent had a chance to shoot them yet, but I wanted to know if this is a common problem/ would buying better mags fix this? will the 9mm beta cmag have this problem too? any info would be greatly appreciated.
semper fi |
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Ive got a RRA colt style mag block, I've also got 5 promag magazines that dont lock into the magblock... now i know they are crappy mags but they do lock up when loaded... havent had a chance to shoot them yet, but I wanted to know if this is a common problem/ would buying better mags fix this? will the 9mm beta cmag have this problem too? any info would be greatly appreciated. semper fi order a DPMS mag catch from Midway USA. It will "probably" fix your problem. |
| I didnt read it all, but this thread might help: http://www.ar15.com/forums/topic.html?b=3&f=15&t=463074 |
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I didnt read it all, but this thread might help: http://www.ar15.com/forums/topic.html?b=3&f=15&t=463074 I'll save some people a little time - it won't. New RRA 9mm catch may help based on new info below. |
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I didnt read it all, but this thread might help: http://www.ar15.com/forums/topic.html?b=3&f=15&t=463074 I'll save some people a little time - it won't. You're quite right Kevin, this was a false lead. The 9mm mag catch that's referred to in this thread does not address this problem but was produced specifically by RRA for their dedicated 9mm lowers. Here are some things you can try: 1. Try adjusting the height of your mag block and make sure the block is not over tensioned. 2. Try a DPMS mag catch - their catches seem to be deeper and might provide better mag retention. 3. Switch to Colt or Metalform mags. 4. If all else fails start again and get yourself a Hahn mag block. This appears to be quite a common problem, why RRA has not produced a specific mag catch to address this problem yet is beyond me. |
| I had the same problem w/ my RRA 9mm. I removed the mag catch and took a file to the rear "pad" (where the stud comes through) and filed off some of the pad and now works great. You just have to be careful to file right up to the stud. I figured that if it didn't work and I ruined it, I only blew a few bucks for the catch. |
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I had the same problem w/ my RRA 9mm. I removed the mag catch and took a file to the rear "pad" (where the stud comes through) and filed off some of the pad and now works great. You just have to be careful to file right up to the stud. I figured that if it didn't work and I ruined it, I only blew a few bucks for the catch. That's exactly how a bolt catch for a 9mm should be made. |
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I didnt read it all, but this thread might help: http://www.ar15.com/forums/topic.html?b=3&f=15&t=463074 I'll save some people a little time - it won't. My bad. Like I said, I didn't read the whole thread. Pretty much just the OP. |
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Now that you've filed the mag release how does it work with other magazines?
Glad what you did worked out. My cousin had a similar issue with one of those high cap. 1911's a couple of years ago. Stick the mag in, chamber a round, on the first shot the magazine falls to the ground (OOOOPS!!) This only happened on 2 of his several magazines, both cheaper aftermarket mags, so we filed the slot in the magazine rather than take a chance on filing the mag. catch on the pistol and maybe causing problems with the factory magazines vs. feeding. After that his two new cheap mags. worked fine. |
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I had the same problem w/ my RRA 9mm. I removed the mag catch and took a file to the rear "pad" (where the stud comes through) and filed off some of the pad and now works great. You just have to be careful to file right up to the stud. I figured that if it didn't work and I ruined it, I only blew a few bucks for the catch. Quoted:
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I had the same problem w/ my RRA 9mm. I removed the mag catch and took a file to the rear "pad" (where the stud comes through) and filed off some of the pad and now works great. You just have to be careful to file right up to the stud. I figured that if it didn't work and I ruined it, I only blew a few bucks for the catch. That's exactly how a bolt catch for a 9mm should be made. Do you actually mean on the flat face of the extractor itself, the bit that's meant to poke through the mag block and latch onto the mag slot on the mag body? Surely you want more meat, not less meat on the actual catch, or are you talking about removing metal from around the sides of that pad to make it deeper? Have you got any photos to demonstrate where you mean? |
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I had the same problem w/ my RRA 9mm. I removed the mag catch and took a file to the rear "pad" (where the stud comes through) and filed off some of the pad and now works great. You just have to be careful to file right up to the stud. I figured that if it didn't work and I ruined it, I only blew a few bucks for the catch. Quoted:
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I had the same problem w/ my RRA 9mm. I removed the mag catch and took a file to the rear "pad" (where the stud comes through) and filed off some of the pad and now works great. You just have to be careful to file right up to the stud. I figured that if it didn't work and I ruined it, I only blew a few bucks for the catch. That's exactly how a bolt catch for a 9mm should be made. Do you actually mean on the flat face of the extractor itself, the bit that's meant to poke through the mag block and latch onto the mag slot on the mag body? Surely you want more meat, not less meat on the actual catch, or are you talking about removing metal from around the sides of that pad to make it deeper? Have you got any photos to demonstrate where you mean? You want to remove material where it contacts the lower, so it can essentially slide further into the lower - do not remove material from the portion of the catch that contacts the mag. Every mag catch, every lower, and every block are going to have ever so slightly different dimensions though. If you have a block that is a few thousandths thicker on the mag catch side, that might cause problems also I seem to recall some guys even tried bending the catch slightly, but I'm not sure what the outcome was. |
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Hey Kevin I have just rechecked the 9mm mag catch that RRA sent me after reading your post and this is exactly what RRA have done. Their 9mm catch is substantially thinner across the part that touches the frame. Their 9mm catch measures 0.144 versus a standard catch that measures 0.155. The depth of the catch therefore protrudes 0.011 more than a standard catch. Contrary to what we've all been saying, the sob WILL WORK!
Wow this has all been confusing. The first RRA tech told me that they produced a catch to address the mag block issue, and the second one I spoke to told me that that tech had got it wrong and that it was only designed for use with their dedicated lowers. |
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Ive got a RRA colt style mag block, I've also got 5 promag magazines that dont lock into the magblock... now i know they are crappy mags but they do lock up when loaded... havent had a chance to shoot them yet, but I wanted to know if this is a common problem/ would buying better mags fix this? will the 9mm beta cmag have this problem too? any info would be greatly appreciated. semper fi As a starting point call RRA and order one of their 9mm mag catches (part no: 9MM0099). This should cure the problem. Sorry for my first post, as I was clearly wrong now having looked more closely at the catch they sent me - RRA make exactly what Triever did to his standard catch, so their (RRA's) catch will insert deeper into the mag body and provide greater retention. |
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That may be just the ticket then if the DPMS catch doesn't help. My DPMS catches are 0.011 thicker than my new 9mm RRA catch across the part of the catch that touches the frame, the height of the actual catch of both are the same. The 9mm RRA catch is definately the way to go for 9mm mag blocks. |
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Just for info, I just spent the last hour doing a custom mod job on my mag catch. I ground down the area around the post with threads where it comes into contact with my lower reciever. I ground the area flat leaving only the part that pertrudes into the magazine sticking out of that side of the mag catch. Worked like a charm. I put the CProducts mags that I currently have through function checks and they both seem to like how the mag catch sticks now. I also took the mags apart and check clearance inside the body to see if the mag catch will interfere with ops. Nope. Infact, it could go another .030 of an inch just fine after doing the mod. I will try and hit the range tomorrow or monday and let you guys know the results.
If someone would like to post the pics, I will send pics of the modifications and forward them so others can see what I did. -Joe |
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Just for info, I just spent the last hour doing a custom mod job on my mag catch. I ground down the area around the post with threads where it comes into contact with my lower reciever. I ground the area flat leaving only the part that pertrudes into the magazine sticking out of that side of the mag catch. Worked like a charm. I put the CProducts mags that I currently have through function checks and they both seem to like how the mag catch sticks now. I also took the mags apart and check clearance inside the body to see if the mag catch will interfere with ops. Nope. Infact, it could go another .030 of an inch just fine after doing the mod. I will try and hit the range tomorrow or monday and let you guys know the results. If someone would like to post the pics, I will send pics of the modifications and forward them so others can see what I did. -Joe Well done! I am glad to hear you've solved the problem. |
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