The top of your bolt carrier teams. The top could be the conventional five.56mm bolt carrier team. Discover the bolt, cam pin and also the carrier critical. On the bottom is the 9mm SMG bolt team. It is a normal FSB and no I'd no complications sighting it in. I https://manuelwmwgo.look4blog.com/65725037/the-definitive-guide-to-colt-9mm-upper