J P Enterprises Ar-15 6.5 Grendel / 6mm Arc Complete Bolt Assembly Enhanced
J P Enterprises Ar-15 6.5 Grendel / 6mm Arc Complete Bolt Assembly Enhanced, The J P Enterprises Complete Bolt Assembly (Enhanced) for 6.5 Grendel / 6mm ARC is precision machined from an ultra-strong steel alloy to last up to 10 times longer than a standard carbon steel bolt, minimizing the risk of bolt failure during a critical engagement. Made from SAE 9310 steel the JPE Enhanced Bolt Assembly for 6.5 Grendel / 6mm ARC has a tough, ductile inner core highly resistant to stress fracturing, with a hard outer surface that resists galling and wear, to ensure a service life of up to 60,000 rounds. This is the same steel used in the transmission gears of Formula 1 race cars, so it's ideal for high-impact, high-heat applications like sustained full-auto fire Mfg: J P Enterprises SPECS: SAE 9310 nickel-chromium-molybdenum steel, black nitrate. Fully assembled with extractor, gas rings, ejector, pins, and springs installed. Bolt Shroud Depth: .140" nominal.