Do not buy this junk - RISE Armament RA-100 AR-10/15 Two-Stage Trigger

Would not even drop the hammer. I know I get it, many reviews we are left with the thought, man maybe he just didn't know what he was doing? This is not my first build. I am an engineer, a machinist and I paid my dues for seven years in industrial maintenance. This trigger just was not machined correct. The detent in the hammer was so stiff I almost couldn't get a taper pin through it. Still, it marred the anti-walk pin I was trying to put in rendering it useless. I have bought 7 other drop in Rise triggers and liked them well, especially at a good price point. I believed in them well enough I didn't read the reviews, that's on me. Don't let it happen to you.