I have a factory Spike's lower with the ST-T2 buffer and standard Spike's spring.
The barrel is an ARP 16" LW QPQ (Melonite) middy barrel. I am running a Spike's BCG and have shot all ammo with out problems when the factory Spike's barrel was on it. Due to medical reasons I have not been out to shoot the rifle yet so I do not know if it will also shoot all sorts of brass and steel cased ammo. Buffer exchanges make any difference as Harrison advertises the gas port is drilled to shoot the steel cased ammo. Since I have not shot it yet, would you think it might have problems with the way it is set up?
Thank you for any advanced info on the AR cyclic system![]()


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