AR-15 .450 Bushmaster 18" stainless fluted upper assembly w/custom brake

AR-15 .450 Bushmaster 18" stainless fluted upper assembly w/custom brake

AR-15 .450 Bushmaster 18" stainless fluted upper assembly w/custom brake, This drop-in .450 Bushmaster upper will attach to virtually any standard AR-15 lower assembly. 

Barrel - 18" 416R stainless steel  hbar barrel, fluted. Chambered in .450 Bushmaster. Button rifled with 1-24 rh twist. .750 under gas block diameter. Threaded 5/8x32. Midlength gas system. Barrel is finished off by tanker style muzzle brake in hardened steel construction. 

A3 flat top upper receiver - made from certified 7075-T6 aluminum forgings. Black hardcoat anodized to Gov. Specs. Forward assist and dust cover installed.

Gas system - .750 low profile gas block, made from aircraft quality steel.  Mid-length gas system

Handguards - Rifle-length quadrail free float rail. Made from aircraft quality aluminum and black hard coat anodized. You may choose your rail preference (keymod, quadrail or mlok) on top of page.

Does not come with BCG or Charging Handle. Can be purchased separately.