Limited Edition of only 50 pieces. To purchase visit COLONIALARMAMENTONLINE.COM or contact us. Hammer MK23 450 Bushmaster Carbine Upper/lower full billet construction Finish: Hardcoat type III anodizing Trigger: Hyperfire 3.5lb tactical trigger Extended takedown pins Fully Ambidextrous (mag release, bolt release, selector, charging handle) CNC machined from 7075-T6 billet aluminum Oversized trigger guard Screw-in bolt catch pin Trigger reset set screw Threaded takedown spring hole Bullet selector markings Semi-Auto operation  Barrel Specs Profile: Heavy Fluted Length: 14.5″ Gas placement: Mid-Length Rifling: Button 1:20 twist Made from 416R Hardened Stainless Steel Bead Blasted Hand-Lapped M4 Feed ramps 3/4x24 Threading .875 gas block Custom Colonial Armament Muzzle Break Bolt Carrier Specs Carrier: M16 style, machined from 8620 tool steel, heat treated to military specs Finish: Nickel Boron Coated Nickel Boron is an advanced metal finish that offers high resistance to wear and corrosion as well as having an ultra low co-efficient of friction. A nickel boron bolt carrier group will have greater lubricity and corrosion resistance than both chrome and nitride BCGs. Handguards Patriot Gen2-12” (M-LOK) UL Free Floating Handguard by Colonial Armament Hardcoat type III anodizing 5-QD swivel receptacles Furniture B5 SOPMOD Stock Black Multi-Cam B5 Black Multi-Cam Grip Sights Tactical Colonial Armament low pro steel flip up front and rear adjustable Included in box Gun lock Manual QD swivel 1-5rd and 1-7rd Magazine Certificate of “Limited Edition” authenticity 1 of 50 status