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1/25/2018 7:38:29 AM
Posted: 2/4/2006 1:59:06 AM EST
Title says it all. Any advantages I should consider? I will be obtaining a SBR upper for use with a M4-2000 suppressor. The upper will see limited full auto fire. As people seem to have trouble at times with their SBR's functioning, I figured I'd inquire if the gas piston design offers any obvious advantages. My barrel length will be between 105/11/5 inches.

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