Magpul ASAP installation on an AR pistol endplate

[mikeplan14]

I just recently got my first Ar pistol! I love it, but would like to put a Magpul ASAP plate on it so that I can use a single point sling. Any advice out there on how to remove the buffer tube and end plate from a Rock River AR pistol (pic below of my gun)? It doesn't have the castle nut on the buffer tube...

 

[223 Gunner]

I would try a strap wrench on the tube itself. You can buy a 2 pack at Lowes, one large and one small strap wrench. They have all kinds of uses so that you don't mar the finish on what ever you are working on.

 

[Amattern]

Off topic but, let me know how it runs when you take it out. I have been thinking of a 7.5" SBR but have heard about reliability issues.

 

[223 Gunner]

I had a Bushy AR pistol one time, a lot of fun, not very practicle.
Way too loud, it ran great, it had a 7in barrel.

 

[mikeplan14]

I'm prob going to break out the strap wrench and try taking it off that way. I'm curious how the buffer tube holds on the end plate with no castle nut... and whether that ASAP will actually fit in place of the plate that's there now.

I'm taking it out tomorrow for the first time! It's a factory build Rock River, so I hope that it runs well!

 

[Lancem]

well without the nut they must not use a keyed plate otherwise you couldn't get it on... bet you're going to have to use heat to get it off, bet there's a bunch of locktight holding that tube in place since there is no jam nut...

 

[figley]

channel locks


(didn't say it would look good, but it WILL get the job done)

 

[EvilBlackGun]

Good piece; why not trust

.. your local gunsmith??

 

[mikeplan14]

Took it out yesterday, and it ran awesome! I think that I'm going to try a heat gun on the threads and then a strap wrench on the tube. From what I can find, it appears that they red loctite those onto the lowers.

 

[Lancem]

Took it out yesterday, and it ran awesome! I think that I'm going to try a heat gun on the threads and then a strap wrench on the tube. From what I can find, it appears that they red loctite those onto the lowers.

Heat gun should work fine, you will have to heat up the whole mass to get the locktite to soften, and that's all it will do, it will feel like it was put together with chewing gum, it will be hard to twist but it will come off once the locktite softens. I've had to take some freefloat forearms that were locktighted on and that how it was with them.

 

[mikeplan14]

Would you recommend that I red loctite it back on.. or maybe use blue?

 

[Lancem]

Go with red, unless you are planning to be taking this apart all the time. You do not want this coming apart. This should be considered a permanent connection, and without a jam nut the only way to guarantee it is with red.

 

[tonhe]

Curious. Without the castle nut, how does the end plate stay on? Anyone have pics?

 

[sepe]

Curious. Without the castle nut, how does the end plate stay on? Anyone have pics?

https://www.exilemachine.net/shop/rra-pistol-buffer-tube-pbt-complete-assembly-2.html

From this it looks like the tube butts up against the end plate. I went with a different assembly when I set up my AR pistol.

Mine is more like this one...

Phase 5 AR15 Pistol Buffer Tube - Phase 5 Tactical

 

[mammynun]

I have the RRA pistol receiver extension on my Noveske not-so-soon-to-be SBR and had to use an ASAP plate because the ASAP is not keyed. There may be other non-keyed plates, but I don't know of any. The RRA tube has a shoulder just behind the threads that clamps the ASAP up against the receiver... the tube is a larger diameter so a stock can't accidentally fall onto it and create an SBR.

For those not familiar with the ASAP; there are triangular "bumps" that point forward and slide around the outside of the receiver to keep it from rotating when it's in place.

 

[Mgderf]

Mine is more like this one...

Phase 5 AR15 Pistol Buffer Tube - Phase 5 Tactical

Will something like this work on a 9mm AR pistol? Does the 9mm pistol use a different buffer spring and buffer?

 

[sepe]

Will something like this work on a 9mm AR pistol? Does the 9mm pistol use a different buffer spring and buffer?

From what I'm seeing, the spring will work but you need a heavy buffer. I've read some using the H3 with a spacer or the RRA 9mm carbine buffer. The tube should work fine. The Olympic pistol buffer assembly would work as well but then you'd still need to get the heavier buffer and you'd end up with an extra std. buffer.

CAR-15/M4 9MM CARBINE BUFFER - Brownells

 

[Mgderf]

CAR-15/M4 9MM CARBINE BUFFER - Brownells[/URL]

Repped