The highest of your bolt carrier groups. The highest will be the typical 5.56mm bolt carrier team. Observe the bolt, cam pin along with the carrier vital. On the bottom could be the 9mm SMG bolt group. I have dabbled in the NFA entire world for 30 yrs and have https://connerunymv.myparisblog.com/27039818/details-fiction-and-colt-9mm-upper