AR-15 .450 Bushmaster 10.5" Pistol Upper Assembly - this is a custom made to order upper assembly. Just add this .450 Pistol Flattop Upper to your AR15 Pistol Lower Receiver, and you are ready for the range. This assembly includes 10.5" heavy profile .450 Bushmaster barrel with slim 12" free-float handguard, available in your choice of mlok or quadrail. Barrel is finished off with flash can.
Barrel - 10.5" 4150CMV steel black nitride medium profile barrel, single feedramps, non-fluted. Chambered in .450 Bushmaster. Rifled with 1-24 rh twist. .935 under gas block diameter. Threaded 5/8x24. Carbine length gas system. Barrel is finished off with a flash can in hardened steel construction, black.
A3 flat top upper receiver - made from certified 7075-T6 aluminum forgings. Black hardcoat anodized to Gov. Specs. Forward assist and dust cover installed. Socom style.
Gas system - .936 low profile gas block, made from aircraft quality steel. Carbine-length stainless steel gas tube.
Handguards - 12" slim profile MLOK free float rail. Made from aircraft quality aluminum and black hard coat anodized. You may choose your rail preference on top of page.
Comes assembled. Testfired for cycling. Does not come with BCG or Charging Handle. Can be purchased separately. Images may not be an exact representation of the product.