Cryptic Coatings 5.56 NATO M16 Bolt Carrier Group - Mystic Bronze

Founded in January 2014, Cryptic Coatings specializes in bolt carrier groups and BCG coatings. With an ever-expanding product line, their BCGs and coatings offer reduced friction, longer lifespans, and increased performance, backed by their lifetime warranty.

This Bolt Carrier Group includes a MIL-SPEC 8620 aircraft quality steel carrier with a shot peened carpenter no. 158 steel bolt. The M16 cut carrier is compatible with most AR-15s on the market and features a shrouded firing pin, a chrome lined interior, and a properly staked, chrome lined gas key secured with grade 8 fasteners. The bolt assembly includes a tool steel extractor with spring and Viton O-ring. A chrome finished firing pin is also included.

Cryptic BCGs are finished in one of six different coatings, each offering reduced friction, increased performance, and greater wear resistance than that of a standard bolt carrier group.

Features:

• Mystic Bronze - 5.56 NATO
• Physical vapor deposition coating
• Coefficient of friction: 0.2
• Hardness: 3200 Vickers
• Maximum temperature: 750 degrees Fahrenheit 
• M16 cut bolt carrier
• High pressure tested
• Magnetic particle inspected
• 8620 aircraft quality steel carrier
• Heat treated to 60-61 RC
• Chrome lined carrier interior
• Chrome lined gas key
• Gas key staked with grade 8 screws
• Carpenter 158 steel bolt
• Tool steel extractor
• Viton O-ring
• Chrome finish firing pin
• MIL-SPEC cam pin
• Weight: 11.55 oz