Like just about everyting else I upload, it's a Hoffman Tactical variant I've been messing with. What happened was I kinda blew up a rifle a few months ago and a friend gave me his barely used AR pistol kit to use as parts cause he's an "Aey-Kay" guy now or something. I pulled the bolt out to replace the damaged one and put a .22LR conversion kit inside before printing the lower. I took the lower I made for the BRN-180 and started to cut down some features off the back. It will be fine for shooting .22LR, it's not intended for anything more powerful.