minus-squarebaseadaptbeard@fosscad.ioto3D2A@fosscad.io•Release (Redux) of Carrier Keeperlinkfedilinkarrow-up2·14 days agoOften you have multiple bolt carrier groups (BCGs) some perform different functions. For example, the lower BCG you see in the attached image is specifically designed to accept a completely different calibre bullet. linkfedilink
Often you have multiple bolt carrier groups (BCGs) some perform different functions.
For example, the lower BCG you see in the attached image is specifically designed to accept a completely different calibre bullet.