Information advice with my SBS build want to shorten the barrel on my Sega 12 to 13 inches. would like to know exactly what it takes to make the gun run After shortening the barrel as far gas block modifications. If it needs it and what that entails. want to try to do some of the work or most of the work myself to cut down on cost, I can cut and crown barrel myself. Sent in the paperwork for the form 1 about five months ago hoping to receive it soon. So I figured I’d start getting some of the information. This will be my second SBS but my first semi auto. Thank you for any advice/help
