This Almost DESTROYED My AR Pistol Build
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.









