ECLIPSE is a (PVD) and with a coefficient of friction - 0.3. Our Enhanced matching bolt is constructed of Carpenter 158 steel and includes the enhanced reliability kit. Not only is the ECLIPSE great looking it is slick, durable & reliable Why choose ECLIPSE: FEATURING FORWARD ASSIST CARRIER WEIGHT ONLY 6.9oz BCG WEIGHTING ONLY 8.8oz LESS FELT RECOIL INCREASED WEAR RESISTANCE INCREASED CYCLE RATE EASE OF CLEANING IMPROVED RELIABILILTY 1800 VICKERS COEFFICIENT OF FRICTION 0.3 EXCELLENT CHEMICAL & CORROSION RESISTANCE HIGH RELIABILITY IN DRY OPERATIONS Competition Bolt Carrier Groups are designed for 556 & MUST be used with a reduced recoil system designed for light weight carriers.
