Compared to the M4 , the M4A1 has full auto capability, a consistent trigger pull, and a slightly heavier barrel. The heavier barrel is more durable and has greater capacity to maintain accuracy ...
My most recent obsession in Gray Zone Warfare is this close-quarters SBR M4A1. It’s compact ... M4 in Gray Zone Warfare To build the Short-Barrel Rifle M4 in Gray Zone Warfare, you must first ...