Building a .22 AR?

[curtru]

No Bullet Button required.

sweet set up

[Sputnik]

No love for TacSol? I put one of their M4 style uppers on a Spikes lower a few years back and its been pretty good to me.

[Losd619]

CMMG is the way to go for .22 lr uppers. Two things: You don't need a bullet button and you need to run a standard GI trigger, light triggers like Timney don't have enough hammer force to pop the primers on 22 lr.(I have tried it).

There are two kinds of magazines you can use with a CMMG .22 lr upper. You can use Black Dog machine magazines which fit into a standard AR15 lower magazine well. You can also buy a Better-Mag conversion kit to put in your lower allowing you to use S&W M&P15-22 mags. With this system you have a operational bolt release to allow more realistic training. I am going from the Black Dog Machine magazines to the Better-Mag/M&P15-22 system with my CMMG .22 lr rifle.

http://www.redi-mag.com/index.php?l=product_detail&p=52

Also check out the conversion kit on youtube

http://www.youtube.com/watch?v=MoYvu_vjN_0

Plenty of people run geissele triggers in their cmmg setups. The regular ones and enhanced versions. The problem is with the hammer. If they are notched it's a no go.

[Sputnik]

I was using a Geissele in the Tactical Solutions though it was not specifically endorsed and it ran fine...for a while. It started doubling after a couple thousand rounds so out it came and the mil spec trigger went back in.