This video details troubleshooting a .300 Blackout AR pistol build that suffered from undergassing and hammer follow. The issues were resolved by swapping the trigger to a Geissele SD-3G, then a Faxon skeletonized BCG, and finally by precisely realigning the gas port and gas block, which was found to be the root cause due to a tolerance stack issue between brands.
You've reached the end! 1 videos loaded.
Gun Laws by State
Read firearms regulations for all 50 states + D.C.
Find Gun Dealers
Search licensed FFL dealers near you.
