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Hammer MK-23 450BM Carbine

Colonial Armament

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 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.


  • Patriot Gen2-12” (M-LOK) UL Free Floating Handguard by Colonial Armament
  • Hardcoat type III anodizing
  • 5-QD swivel receptacles


  • B5 SOPMOD Stock Black Multi-Cam
  • B5 Black Multi-Cam Grip


  • 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