9mm AR Mag Catch?

[AYEAREFIFTEEN]

Hopefully someone can help me out with this one. Did a search an came up blank.

I just bought a bullet button for my RRA 9mm AR build and the spring tension on the mag catch isn't enough to hold the mag in place due to the fact that the mag catch does not protrude more than 1/16 of an inch past the RRA conversion block. The Mags are 10/10 C-Products and 10/25 UZI conversion. The Prince50 button held every mag I have in place without a problem, but this bullet button will not work.

Is there a mag catch specifically built for the 9mm AR perhaps with a little more material on the side that holds the mag in place?

I know there aren't a whole lot of people out there with 9mm builds, but hopefully someone out there can chime in with any experience.

Especially Wes because you got me into this mess!

[flooby]

I have a Hahn mag block and bullet button. The standard mag catch holds my RRA mags just fine.

[tenpercentfirearms]

Hmm, I just function tested my 10/10s and a 10/25 on my 9mm with a new BB and I didn't seem to have that problem. I need to go out and fire them in a real test soon and see what I figure out.

What kind of LPK are you using? I doubt they are going to have mag catches that far out of spec.

You might also want to loosen up your mag block, insert everything, and then retighten it since it might align a little differently now.

[AYEAREFIFTEEN]

Hmm, I just function tested my 10/10s and a 10/25 on my 9mm with a new BB and I didn't seem to have that problem. I need to go out and fire them in a real test soon and see what I figure out.

What kind of LPK are you using? I doubt they are going to have mag catches that far out of spec.

You might also want to loosen up your mag block, insert everything, and then retighten it since it might align a little differently now.

Wes, i'm using a RRA lower parts kit. I'll try loosening the mag block and see if that will solve the problem.

[AYEAREFIFTEEN]

I tried to move the conversion block around and tried a combination of three different mag catches (two rock river and one stag) with three different bullet button kits and still the same problem.

It seems there there is too much play between the bullet button nut and the housing. It's allowing the mag catch to move just enough to allow the mag to be pulled out (with a little force) without having to press the button with a tool.

Could the housings I have possibly been drilled/machined a bit out of spec? How much play should there be between the the nut and the housing?

[AYEAREFIFTEEN]

Hey guys I hate to bump and old thread but i'm still having a hell of a time with this rifle. I'm hoping there are a few more of these out there now and perhaps someone has had the same problem and found a fix.

I recently aquired 3 more of the newer style bullet button with the black annodized nut and still the same problem with all three. Thanks.

[jchen76@gmail.com]

Could it be the magazine? The old c-products 10 rounders were crap. The newer 10 rounders they sent to me were better, but can't load in all 10 rounds or the magazine won't lock in place. I've never had problems with 10/30 or 10/20 uzi magazines.

[AYEAREFIFTEEN]

Could it be the magazine? The old c-products 10 rounders were crap. The newer 10 rounders they sent to me were better, but can't load in all 10 rounds or the magazine won't lock in place. I've never had problems with 10/30 or 10/20 uzi magazines.

I've tried two of the older 10 rounders, two of the newer 32 round bodies, and one of the uzi mags. No joy on any of them.

If i use the Prince 50 style mag lock I have zero problems with any mags because the mag catch isn't allowed to move at all. Just seems like there is a little "wiggle" due to the little bit of slop between the nut and housing of the bullet button.

[jchen76@gmail.com]

I guess the last thing is to bring it to AR smith. Or re-install the bullet button and magazine catch.

Nifty video on what to look for when installing the magazine catch

http://www.lifelibertyetc.com/RangeBag.aspx

[grubbin]

I have a fairly similar set-up... RRA magwell adapter in a Spike's lower with a gen 1 BB, Armalite LPK and 2x 10/10 Cproducts mags. I haven't had any issues with the mags locking into place. Have you tried other mags? Why not go back to using the Prince 50? Have you tried holding the bolt open and then slamming the mag into place? What about mucking with the mag catch spring? I'll check my 9mm tonight and see if my button is wiggling as much as yours.

[phsieh10]

could it be that the mag is not getting inserted high enuf to engage the mag catch?

[AYEAREFIFTEEN]

Thanks for the replies everyone.

I have a fairly similar set-up... RRA magwell adapter in a Spike's lower with a gen 1 BB, Armalite LPK and 2x 10/10 Cproducts mags. I haven't had any issues with the mags locking into place. Have you tried other mags? Why not go back to using the Prince 50? Have you tried holding the bolt open and then slamming the mag into place? What about mucking with the mag catch spring? I'll check my 9mm tonight and see if my button is wiggling as much as yours.

The mag is deffinately clicking in place where it is supposed to be. It will stay in the magwell and support a full load, but if you "wiggle" it left to right it will pull out. Perhaps this isn't as big an issue as I believe, but I would hate for a faulty mag catch to be construed as a "detachable" mag condition.

I have already gone back to the prince 50 but have been spoiled with the bullet button on my other two rifles.

If you are willing to check the mag catch play just push the front most part of the mag catch on the inside of the mag well (toward the front of the rifle) and look at the nut move within the housing.

could it be that the mag is not getting inserted high enuf to engage the mag catch?

Cproducts web site actually says to install the rock river mag block 2/10 of an inch low, and that just makes the problem worse.

Thanks

[grubbin]

... but if you "wiggle" it left to right it will pull out. Perhaps this isn't as big an issue as I believe, but I would hate for a faulty mag catch to be construed as a "detachable" mag condition.

If you are willing to check the mag catch play just push the front most part of the mag catch on the inside of the mag well (toward the front of the rifle) and look at the nut move within the housing.

Yeah, I've tried to wiggle a few of my mags and they all stayed put. I'll look over the housing again, but I really didn't see as much play as you're describing.
Here's a shot of my set-up. I obviously circled how much the mag catch protrudes for you to use as a comparison. Hope this helps.

[Stunnason]

The OP might not have tighten the BB enough...I have found out that if the BB is not tight enough mags will wiggle loose.

[AYEAREFIFTEEN]

Yeah, I've tried to wiggle a few of my mags and they all stayed put. I'll look over the housing again, but I really didn't see as much play as you're describing.
Here's a shot of my set-up. I obviously circled how much the mag catch protrudes for you to use as a comparison. Hope this helps.

Great picture thank you very much. Your mag catch protrudes a bit more than mine does. Perhaps the Armalite mag catch is the answer here.

Stunnason, I thought i've had the button down as far as it would go, to the point where i thought the spring was binding up. Had about 1/8 of the threaded part of the mag catch showing through the top of the nut. Is that not enough?

P.S. Sorry for the late reply was out of town this last weekend.