Quote:
Originally Posted by 320pf
This statement is not true either. ALL of the barrels that I designed and built do NOT "require" an adjustable gas system to shoot subsonic and full power ammo in the same rifle. My barrels can shoot subs with bullets as light as 165 g and supersonic loads. Typical velocities (from a 16" barrel) for a 150 gr and 125 gr bullets using loads listed in the Sierra manual is 2000 fps and 2250 fps.
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If you load the supersonic to 55,000 psi, and add a suppressor - will it or won't the full auto cyclic rate exceed Colt M4 specs? And if you shoot the subsonic without a suppressor, will or won't the cyclic rate be within Colt M4 specs? These are things we did on high speed video when setting all the specs.