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 DPMS AR-15 M231 Telescoping Stock Assembly
otto_esq  [Team Member]
12/3/2004 10:02:51 PM
Does anyone have any experience or comments on this collapsable stock?





I'm considering it for a combo stock/buffer tube arrangement for an AR pistol/ carbine combo.
(AR pistol: 7.5" barreled upper, no wire -- add a 16" upper, and then the stock wire for a carbine ala Thomson/Center Contender pistol /carbine combo kit)

I've thought about an entry-length stock with and without the stock piece over the receiver extention and even a CAR stock/extension, but this is an interesting option, if it is any good as a carbine stock.

Opinions?

Thanks in advance.

Cheers, Otto
ViperEH  [Team Member]
12/4/2004 6:02:40 AM
I dont think you can use something like that to easily convert from rifle to pistol by just adding the wire. 99% sure the ATF would frown on that. (not that I care, knock yourself out) That said its a terrible stock for shooting. If it were me I'd get one or the other. (pistol buffer, or M4 collapsible) I'm sure others will chime in that are more expert than me, but thats my read. Good luck.
j3_  [Member]
12/4/2004 9:38:55 AM
HEAVY.
anyshorty  [Member]
12/4/2004 1:25:41 PM
You may already know this stock was used on the M231 port firing weapon designed for tank crews.It will only work on the early style lowers with out the raised reinforced area at the rear where the buffer tube screws in.That reinforcing does not allow the stock rails to slide forward.You would only have to file a little on your lower. I have been waiting to find an early style lower.It is a bummer, I also really like it. Maybe this ia newer model than mine.
shamayim  [Member]
12/4/2004 5:47:28 PM

Originally Posted By anyshorty:
You may already know this stock was used on the M231 port firing weapon designed for tank crews.It will only work on the early style lowers with out the raised reinforced area at the rear where the buffer tube screws in.That reinforcing does not allow the stock rails to slide forward.You would only have to file a little on your lower. I have been waiting to find an early style lower.It is a bummer, I also really like it. Maybe this ia newer model than mine.




Well, if they've duped the wire stock part of the M231, then the stock piece is nearly useless for off the shoulder work. They twist, bend and vibrate like crazy.
otto_esq  [Team Member]
12/4/2004 9:50:01 PM
With statements like "They twist, bend and vibrate like crazy" and "its a terrible stock for shooting" I think I'll pass. Those are fairly unequivocal opinions -- not to hard to figure out any hidden meaning, if you know what I mean.

Thanks Gentlemen.

As for the ATF: possibly they may not like it but they still have to follow the Supreme Court, and a combo AR pistol converting to a 16"+ barreled rifle and back (as long as the gun starts as a legal pistol) it is outside of 26 USC Ch 53 (the NFA, specifically 26 USC 5845(a)) and consistent with the USSC in US v. Thomspon /Center

Thanks again,

Cheers, Otto
Accomplice  [Member]
12/9/2004 2:24:26 AM
Once my sbr tax stamp is in hand, can the wire portion and the part that hugs the tube be removed and slapped onto the shorter buffer tube on a carbon 15 pistol?
Accomplice1  [Member]
12/12/2004 5:19:38 PM
Bump, would it be possible to take off the buffer tube it comes with and slap it on the Bushmaster carbon 15 pistol buffer tube?
anyshorty  [Member]
12/13/2004 12:58:29 AM
The buffer tube is what holds the sliding latch assembly to the receiver.You put the buffer tube into the sliding stock assemly and screw it into the receiver.The tube is thicker at the back so it can pull the assembly to the receiver.I dont think a carbon buffer tube will work. I think it is the same diameter the full length of the tube.
Accomplice  [Member]
12/21/2004 12:33:28 AM
I'm thinking that this stock could be a viable option for those of us who own Busmaster carbon 15 pistols and are registering them as NFA SBRs. Some mods would be required. The bump at the front of the stock assembly would have to be ground off and in its place a recess would need to be drilled so that the stock could fit snugly against the carbon 15 lower and accept its protruding sling stud. Because the carbon 15's buffer tube is shallower and has a spring guide rod running its length some mods would be required to the DPMS supplied buffer tube to make it work. A dowel of appropriate diameter and length could be dropped into the DPMS buffer tube making it shallower like the carbon models. The dowel could be drilled out down its center. A long nail or screw (of the proper length, diameter) placed down its center to function as the new spring guide rail. Does anybody see a reason why this wouldn't work?