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Posted: 2/4/2006 2:59:06 AM EDT
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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