Cylinder set, Bore-Up, stainless steel, M16, M4, SHSStainless steel Bore-up set for airsoft weapons series M16/M4 from SHS. The package contains a plastic BU piston head with a tapered impact, aluminum cylinder head with two o-rings, ribbed cylinder without hole, the plastic delayer on the piston gear and metal nozzle 21.4 mm with O-ring.
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Attention: Due to the varying dimensions of parts of the NBU can not be combined with conventional basic components of cylinder set. Sometimes this is possible only after appropriate treatments.