Takedown Pin Set
I had a LMT SBR lower and BCM upper that fit horribly. In fact, every upper I tried fit poorly. I know it doesn't matter for reliability or accuracy, but man was it bothersome. Tons of play in every direction, noisy too. I bought these pins as a last resort, and didn't think it would really make any difference. Wow, did it make a difference! Know the fit is snug, no more wiggling around and clanking. Pins are smooth in/out, no binding. Unbelievable what a few thousandths diff in dimensions made. Also, it doesn't mention that the pins are slightly longer too which I like for disassembly. Will definitely buy more of these as needed!