Nickel boron niceness - American Built Arms Company PRO 5.56 Bolt Carrier Group (BCG)

American Built Arms makes some nice products. Their Pro 5.56 BCG feels right coming out of the box and then fitting into the upper receiver. It engages the barrel and gas tube smoothly and cycles cleanly. The sum of the parts makes a difference, so my build included a nickel boron trigger to keep it all smooth. Quality BCG at a very good price point.