Bushmaster 15-e2 carbine length - The Triggered Company Partisan Disruptor AR-15 Forced Reset Trigger 3 Position Drop In Forced Reset Rifle Trigger w/ Single Side Safety Selector

Tried a Armaspec H3 pinned buffer but it was no go. Too light on primer strikes to cycle. Switched to Spykes Tactical T3 5.5 oz titanium buffer with Armaspec BBS braided spring. Works like a charm for semi, burst and rock & roll. Swapped upper to a 10.5 inch pistol 7.62x39 upper and that cycled great with brass ammo. Next improvement will be Anarchy titanium firing pins more consistent primer strikes.