Sig upper M400 11.5 5.56 $299

[TLB2]

https://www.sigsauer.com/store/uppe...n-blk-keymod-kit-less-bolt-carrier-group.html

over 150 in stock

 

[MegaFan]

Like the 9" 300 BLK, the 11.5" 556 has an ALG Defense handguard, so you might want to buy the $5 tool from ALG. I bought one of these in early February when they first went on sale (had over 500 in stock at the time) and moved the barrel and handguard to a Mega Arms build. Makes a nice little shooter.

 

[RamRoddoc]

That's pretty dang nice! I'd add this for a nice pistol that you don't have notify the ATF to cross state lines with.

https://www.sb-tactical.com/product/sbpdw/

 

[MegaFan]

RamRoddoc , I've tried that one, the KAK, and other variations and feel the plain cheek rest/weld works best for me. I do have foldable versions on my MPX and CZ Scorpions, but all are still buffer tubes with covers.