I love building and modifying these.
- Smith & Wesson M&P Lower
- SS Barrel 7.62 X 39
- Nickel BCG (bolt carrier group) w/ 7.62 bolt and enhanced firing pin
* I had to enhance the Mil-Spec M4 firing pin because 5.56/.223 requires only .028-.032 thousandths pin protrusion and 7.62X39 requires .050-.060 thousandths. Chucked it up in a lathe and took .020 off of the shoulder face of the firing pin.
- Knights of Armament quad rail (carbine length)
- Fab Defense GL-MAG adjustable stock w/ Built-In Mag Carrier
I built a few other lowers for a .300 AAC Blackout build, POF (patriot ordinance factory) SS short barrel upper build, and a 22lr conversion build.
I'm not a big fan of the pistol tube short barrels so I had to file for the Tax stamp to be legal.
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