After a bit of a break from building stuff, I finally got around to finishing my 300BLK pistol using my Decepticon 80% lower. A breakdown of everything: - QD Ambi 80% billet lower - Aero Precision upper no forward assist - Centurion C4 Rail - Lantec Dragon 7.62 muzzle brake - Troy FDE BUS - Standard US Mil trigger group - Seekins Ambi Safety - SPIKES H2 buffer - Standard Carbine - KNS SPIKES Anti Rotation Pins - KAK Shockwave Inspired by this picture.