Buffer Tube advice

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stevelee24

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am i right in thinking you only need to upgrade the Tube kit on a standard m&p if you wanting to add a mil spec butt stock?

a commercial MOE stock should fit right on the existing tube??
 
Last edited:
labdad is right. More of a reciever extension than a buffer tube as it is part of the lower and not removable. And it is mil spec so any such stock will fit.
 
ah right just i was looking on the ar15 forum and they sell the mil spec MOE butt stocks with the tube aswell and said something about mil spec size and some other size.

just wanting to make sure i get the right fit as its coming along way from USA to England
 
I think stevelee24 might be in the wrong forum. I get the feeling he's talking about the receiver extension on a 5.56 M&P.
 
by the way i have not got my hands on my 15-22 yet so im not clued up how it all works. so if i just get the mil spec MOE butt stock it will fit right on ??
 
Yes. The receiver extension on an M&P 15-22 is not a separate piece like a real M4/AR-15. It is a single molded part of the lower receiver. It is mil-spec sized, so any mil-spec stock body will fit it fine.
DO NOT get a commercial sized stock body for an M&P 15-22, it will not fit properly.
 
stevelee24 welcome to the forum. As said previously, you could buy a moe mil-spec with buffer tube and spring, but if your buying for your 15-22 you will be spending extra $$ on parts you wont need. To upgrade your buttstock for your 15-22 you will ONLY need a mil-spec buttstock, NO buffer tube/spring needed. Have fun with your new rifle.
 
thanks for the help guys, good job i come here for advice i almost spent extra on the mil spec tube i wouldn't need :D

i did not realise the 15-22 was a fixed tube
 
I did not either until I got it.

Well, actually, before I bought it a month ago, I was kicking around the idea
of going all "olde skool" M-16 and getting an A2 butt stock, a triangular hand
guard, and a carry handle, but cancelled that idea when some gentleman
here pointed out that it could be done, but it was irreversible.

In this case, 2 out of 3 ain't good.

The next time I have a grand kicking around with no bills name on it, I just
might make up a total conversion...
 
A triangular hand guard, and a carry handle with a almost any front sight are fairly easy to do and are reversable.
 
Yeah, well, for me, it's all or nothin'.

I think it'd look lame with a collapsible stock, and the forward accessories.

Someday, when I make it big...
 
Thinking of this...removing tube, attach adaptor, put mating side on tube, so it can go back on, and make adaptors to fit old school stocks, or SCAR style folders. Dunno an idea I got.
 
Uh...I'm not going to end up in the pokey for lopping off the stock right?
 
Provided that you finish and install a new butt stock of an appropriate length you are fine. A pile of parts on your bench can't be considered and SBR. Strip the lower receiver before you start cutting then its only a work in progress. Besides I would want to strip it bare before I took a saw to the buffer tube/extension.

Not that I personally would want to take a saw to it anyway.
 
True, true. Im not to the point of hack and slash just yet. breaking out the calipers tonight to try and finish blueprinting the rest of it, and the stuff i have attached. then i can "cut" it in CAD and do what i want without breakin my heart.
 
stickbug1 said:
Provided that you finish and install a new butt stock of an appropriate length you are fine. A pile of parts on your bench can't be considered and SBR. Strip the lower receiver before you start cutting then its only a work in progress. Besides I would want to strip it bare before I took a saw to the buffer tube/extension.

Not that I personally would want to take a saw to it anyway.
Click to expand...

It may not be considered an "SBR" but it could be considered "Intent to make an SBR" And Intent is all the ATF needs..

Just saying!
 
I don't think that there is enough material anywhere to bear the stress of attaching an adapter to allow for a side-folding stock. The most radical thing I would even consider attempting would be modifying the receiver extension to allow the installation of a Magpul UBR stock. This would mean machining off the 'rib' on the bottom of the tube and reducing the outside diameter a little. I'm happy with the ACS I've got and will leave it like it is, for now.
 
OK so SBR might not be the exact best description for what we are discussing here. Any rifle less than 26" OAL is NFA regulated. If you start with a rifle that is greater than 26", take it apart, modify or upgrade it, and put it back together with a new buttstock configuration that still maintains a minimum of 26" OAL that is fine. There is no intent toward anything else. Its no different then me taking apart my real AR and removing the buffer tube to install a new sling plate. Or removing an A2 fixed from the receiver and installing a 6 position car. You are allowed to work on your guns. That's One of the reasons why we all love the AR platform so much, there like big kid Leggos.

When you reassemble it to a functioning firearm it needs to be compliant. 16"+ barrel and 26"+ over all length.
The danger here lies in the event you cannot successfully get the AR buffer tube re-attached to the polymer 15-22 lower. The firearm has then been permanently modified and can't be made back to 26"OAL. And your S.O.L.

Saying that his project to change the M&P "extension tube" to an AR buffer tube would fall under BATF scrutiny is a bit over the top. IMO
 
Stickbug,

I'm just trying to look out for my fellow S&W forum brothers and sisters. The BATFE can do and say whatever they want, no one is going to challenge them. For example if I own a 15-22P (Pistol) and have a forward grip laying around and the BATFE wanted to throw around their weight... That is technically "Intent to make an AOW"

Just saying! I am not saying I agree with it.. But I don't ever want to be on the wrong side of them either!
 
There's already case law that refutes most of this. Just having a 15-22P and 15-22 does not put you into liability intent to create a SBR "just cuz" you could put the 7" barrel on top of the rifle lower.

All bets are off, though, if you hold up the local liquor store with it...

Neither the 15-22 nor AR15 has a "buffer tube..." :)

M4buffer.jpg


-- Chuck
 
I'm right there with you Brett. I don't ever want to have them looking at me and questioning things either. The very important thing to pay particular attention to is the "intent" vs "ability".

Having a 300HP car gives you the ability to speed. The driver would have to do something to demonstrate the intent to misuse it before there is a problem.

I have in my large firearms inventory of stuff: an M&P 15-22 rifle, an M&P 15-22 pistol. I also have several different forward grips for use on several AR platform rifles. With those components someone could, if they chose to break multiple laws in under 30 seconds. Merely having the ability without showing any intent or attempt, doesn't break any laws.

That said, Brett has a good point. Pay very close attention to what you are doing when tinkering with any of your firearms. If what you are doing can in any way be misconstrued as an attempt to create an AOW or SBR, that can and will create problems.

Juvicator wants to create a detailed plan with his end goal clearly designed and shown prior to actually doing any modifications. Then gather the needed parts to complete the project. And then the final step is to make the changes reflected in his plan. This process clearly shows what the intent of his change was. Provided the end product matches his designed plan, all is well.
 
I thank everyone for the heads up advice. Not chopping her up any time soon. I just don't like to see posts of guys who want to change something and "can't" when I have the skills to make "cants" go away. It will be better when I set up shop get my permits and can do rather than think. Got it almost all drawn up and it looks pretty good. Will be able to attach a tube, M16 stock, and a SCAR type folding poly stock. Need to make a top rail attachment for catching the folding stock, but still need time.
 
The top rail attachment for the folding stock would have to be strong enough without blocking the operation of the charging handle. It would require some serous design and machining.
 
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