Bolt assembly machined from either Mil-Spec Carpenter 158 steel, shot peened for increased strength per Mil-Spec, includes Mil-Spec 4140 billet tool steel extractor w/ spring and viton o-ring, Mil-Spec ejector and spring. HPT (High Pressure Batch Tested) and MPI (Magnetic Particle Inspected). Comes Assembled. Specifications for Cryptic .308 WIN/7.62x51mm Bolt Assembly – Complete: Manufacturer: Cryptic Fabric/Material: Carpenter 158 Steel, 4140 Billet Tool Steel Cartridge: 7.62x51mm NATO, .308 Winchester Gun Make: AR Platform Gun Model: AR-10 Hand: Ambidextrous Included Accessories: Standard Weight: 2 oz Bolt Material: Steel Carrier Material: 8620 Steel Package Contents: Cryptic .308 WIN/7.62x51mm Bolt Assembly – Complete Bolt Tool Steel Extractor Assembly (spring with viton insert pin extractor) Ejector Assembly (ejector spring roll pin) Gas Rings – Set of 3
2 reviews for Cryptic .308 WIN/7.62x51mm Bolt Assembly – Complete
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perry-bill –
This bolt head fits perfect with their BCG's, AND is functional with several other after-market .308 BCG's as well. DO NOT use without a visual confirmation of critical matching measurements and smooth cycling with original BCG/receiver.
Jesse Sellers –
I actually used this bolt on a 6.5 creedmoor build and it worked great. I had a coupon and a few OP bucks to spend so I got this one. Headspaced great to the rifle and had extraction and ejection.