Polished stainless steel cylinder M4, ribbed, O slot, ZC LeopardPolished stainless steel cylinder type M4 from ZC Leopard. Vertically ribbed cylinder, four regular oval holes, which is designed for a barrel length in the range from 300 to 400 mm. Ribbing increases outer surface of the cylinder and this leads to a better removal of unwanted heat generated by friction of the piston head on the cylinder wall. Universal use in most of the various electric weapon mechaboxes (eg HK416, G36K, AK-105, SCAR, BREN) with respect to the length of the inner barrel.
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