Cryptic Bolt Assembly - Complete 458 SOCOM/.450 Bushmaster Mystic Bronze

Cryptic 458 SOCOM/.450 Bushmaster Bolt Assembly - Complete - Bolt assembly machined from Mil-Spec Carpenter 158 steel, shot peened for increased strength per Mil-Spec - Includes Mil-Spec 4140 billet tool steel extractor with spring and Viton o-ring - Mil-Spec ejector and ejector spring - HPT (High Pressure Batch Tested) and MPI (Magnetic Particle Inspected) - Comes Assembled Specifications: - Manufacturer: Cryptic - Finish: Chrome Plated - Fabric/Material: 4140 Billet Tool Steel, Carpenter 158 Steel - Carrier Material: 8620 Steel - Bolt Material: Steel - Caliber: .458 SOCOM, .450 Bushmaster - Gun Make: AR Platform - Gun Model: AR-15 - Hand: Ambidextrous - Weight: 2 oz - Included Accessories: Standard Package Contents: - Cryptic 458 SOCOM/.450 Bushmaster 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 What firearm models does the manufacturer say Cryptic 458 SOCOM/.450 Bushmaster Bolt Assembly - Complete is compatible with? - AR-15 (AR Platform) Finish: Chrome Plated Weight: 2 oz Carrier Material: 8620 steel Bolt Material: Steel