Well I finished my Spikes Tactical lower. It is CLEARLY evident that I am a novice because I marred the hell out of my lower. I'm gonna have to get a touch up marker. I'll tell you if your not experienced in working with all those tiny detents, springs, & roll pins, its quite a learning curve. A few times I had very small springs flying halfway across the room lol... Its a miracle I did not lose anything. But even with all the headache this first build gave me, I tested all the functions (trigger, hammer, safety, etc.) & everything works as its supposed to. I'm thinking about some upgrades for it later like some anti-roll trigger & hammer pins.Building an AR is one of the things that you just get better at the more you do it. I'm doing the upper tomorrow, & with any luck I'll bring it to the range later in the week.