Given the nature of some of the questions you're asking I would refrain from any further modifications to your rifle. Try your hometown forum, but for what it's worth you're treading dangerous waters for no appreciable gain.

Wow, you sound like my cop buddy. Just want the gun to fit me better. Am I the first guy that likes to tinker with their toys? Maybe I will put some tin foil rolled up back in the hole for the roll pin.

Is your barrel threaded? If so that alone is illegal in ban states. muzzle breaks are legal as long as they don't hide the flash (or silence it) but have to be PINNED AND WELDED ON! no threaded barrels on AR's in ban states!

[mod] This is incorrect - threads are allowed to install ban compliant muzzle devices (like muzzle brakes) - that is why such devices need to be pin/welded or silver soldered. If the devices is just friction fit and uses a set screw or pin then said pin does not need to be permanently attached via welding.

No threads on barrel, its a compliant Mass AR. I dont know wht Mr. Sweatpants is all bent on me making my AR fit me better, the gunsmith said he would do it for $40. I design turbine engines fo GE so I think I'm capable of a minor stock adjustment? I am still on AR15.com right? Sometimes I get switched over to the knitting channel and they yell at me for talking about guns.

You're a new user, someone is giving you what they think is decent advice, and you're responding with disdain and sarcasm. I would advise you to stop before you get into trouble and change your attitude.

If you're modifying the stock to make it adjustable, you are breaking the law. It is a felony.

If you have a threaded muzzle without a non-flash suppressing device permanently attached, you are breaking the law. It is a felony.

If you want to move the stock and then re-pin it so it is not adjustable, that is legal. Have the gunsmith do it right if you aren't experienced.

I think what he is trying to tell you is that what your doing may or may not be illegal in your hometown. And continuing to talk about it/post pictures will certainly get you in trouble if it is in fact illegal to modify.

It is not considered adjustable. It is only adjustable if you are in a non-ban state. Ban states, like MA, require non-adjustable stocks.

In non-ban states, no tools are required. You simply depress the adjustment lever and move the stock.

Part of the reason is that we have people who have asked about illegal modifications before, and I will quickly have them banned if that's the case. You didn't, but people are VERY vocal if things even look like they're heading in that direction - for keeping intact the good name of AR15.com and also for your benefit.

If you do it right and re-pin it properly once you've adjusted it, I'm sure it will be fine. Make sure there's not some law about the gun's overall length that you're encroaching on.

This is my MA compliant AR. To have a MA compliant AR is pretty simple. I don't understand why you are unbolting the stock from the buffer tube and getting all upset about it.

A rifle that has a collapsible stock needs to be pinned in place in order to make it MA compliant (unless you have a preban lower receiver, than you can do whatever you want to your rifle). For example, my SOPMOD stock (pictured) is on a 6 position carbine buffer tube, but the stock is pinned in place with a roll pin so it cannot move. If I want to I can take the pin out, move it to another position, and repin it and be legal.

The muzzle break on my rifle is designed to look like a regular bird cage flash hider, but its not, it is a muzzle brake. Here is a link to the break:
http://www.brownells.com/.aspx/pid=30944/Product/AR-15-M16-MUZZLE-BREAK

The break needs to be pinned and welded onto the rifle.



I suggests checking out www.northeastshooters.com, there are plenty of threads on there that discuss this in depth.

Hope this helps

The best way to go about making your stock fit you right would be to completely remove your stock assembly and buffer tube (which you were calling your gas tube). The "collapsible" stocks that come on MA compliant guns are not at all adjustable, and are pinned and bolted just to prevent any wiggle or slop. Your best bet would be to buy a new carbine buffer tube (mil spec or commercial) and buy a collapsible stock. Put this stock in the position you like, drill a hole (or 2 if you want to be safe) and insert a roll pin. If you don't pin it, it will be a felony in MA. If you don't want to pin it, that's fine with me, I wouldn't risk the jail time, just don't tell the people on the forum that you're not going to.

In terms of your take down pins, there should be nothing different about them than any other AR, there are no MA laws in this area. Pictures may help us visualize what you have on your rifle.

In terms of muzzle brakes, if you have non threaded barrel (which I'm assuming you do), you can take it to a gunsmith, get it threaded, and place any muzzle brake on there that you want to, then get it pinned and welded (permanently). Threaded barrels are illegal in MA as well. You can not attach a flash suppressor (MA illegal), only a muzzle brake. There are many that look just like flash suppressors if it is the look you are going for.

Hope this helped

As long as it is bolted and requires tools, then you are good to go. It doesn't have to be permanent. One of my AR's was a ban compliant gun. The stock could not be adjusted, but was only bolted. If you were to remove the bolt it would slide on the buffer tube. Set it to the correct length for you (minding the minimum rifle length) and re-bolt. You should be just fine.

Flash hider is illegal. Muzzle brake is not, however it must be "permanently" installed. Pinned/welded or silver soldered. If your gun isn't threaded contact Adco. They can thread and permanently install a brake for you.

These guys are right, though. Hit your hometown forum in the future. They should be able to clarify in a hurry.

I guess your right, a shorter stock would do it. Its just so crazy here trying to figure out the law and the intent of the law. No one really knows for sure when I ask. I would think a shorter stock would be risky with the laws here. Not really sure why we cant have adjustable stock but I would guess because you could make it shorter and easier to hide? Thats why I'm here asking, maybe someone has done this or been thru this before.