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 6.5mm Grendel/7.62x39mm Bolt Assembly – Complete: Manufacturer: Cryptic Finish: Chrome Plated Fabric/Material: 4140 Billet Tool Steel, Carpenter 158 Steel Cartridge: 6.5mm Grendel, 7.62x39mm Gun Make: AR Platform Gun Model: AR-15 Hand: Ambidextrous Included Accessories: Standard Condition: New Weight: 2 oz Bolt Material: Steel Carrier Material: 8620 Steel Package Contents: Cryptic 6.5mm Grendel/7.62x39mm 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 6.5mm Grendel/7.62x39mm Bolt Assembly – Complete
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Cryptic
Dixie Normus –
One of the lugs on my PSA ks47 broke. This is actually under warranty by PSA but they wanted me to send the entire gun in. I didn't want to do that so I got the cryptic bolt to replace it. 250 rounds with zero issues. If you shoot steel cased ammo this is definitely a great upgrade to any 7.62 style AR upper.
SKYLER –
What I thought was a new bolt ended up being a rusty picketted extractor that looks like it sat in rain for a decade. Unacceptable.