.450 Bushmaster

AR-15 .450 Bushmaster - Moriarti Armaments 450 Bushmaster Upper will provide a significant boost to your firepower. Through meticulous engineering, each shot will be imbued with both power and accuracy, leading to unparalleled performance in the field whether your intentions are to hunt or shoot targets. To gain access to superior weapons and accessories, look no further than Moriarti Armaments.

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  • AR-15 .450 Bushmaster 10.5" Pistol Upper Assembly / Flash Can
    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" f..
    AR-15 .450 Bushmaster 10.5" Pistol Upper Assembly -  this...
    $299.95$499.95
  • AR-15 .450 Bushmaster 10.5" Thumper Pistol Upper Assembly / Mlok
    AR-15 .450 Bushmaster 10.5" "Thumper" Pistol Upper Assembly -  upgrade your AR. Just add this .450 Pistol Flattop Upper to your AR15 Pistol Lower Receiver, and you are ready for the range. This assembly includes 10" heavy profile .450 Bushmaster barrel with slim 10" free-float handguard, a..
    AR-15 .450 Bushmaster 10.5" "Thumper" Pistol Upper Assembly - ...
    $299.95$499.95
  • AR-15 .450 Bushmaster 12.5" Pistol Upper Assembly / Tanker
    AR-15 .450 Bushmaster 12.5" Pistol Upper Assembly / Tanker -  Just add this .450 Pistol Flattop Upper to your AR15 Pistol Lower Receiver, and you are ready for the range. This assembly includes 12.5" heavy profile .450 Bushmaster barrel with slim 12" slim Mlok free-float handguard. ..
    AR-15 .450 Bushmaster 12.5" Pistol Upper Assembly / Tanker -&n...
    $299.95$499.95
  • AR-15 .450 Bushmaster 12.5" Upper Build / 12" Slim Rail / Shroud
    AR-15 .458 Socom 12.5" Upper Build W/ 12" Slim Rail / 3" ShroudFeatures:Barrel Length: 12.5" Melonite Barrel Gas System: Carbine Barrel Profile: Heavy Barrel Steel: 41V50 Barrel Finish: Nitride coated Muzzle Thread: 5/8x24 Twist Rate: 1/24 Diameter at Gas Block: .875 Gas Block Type: Ste..
    AR-15 .458 Socom 12.5" Upper Build W/ 12" Slim Rail / 3" ShroudFeat...
    $329.95$499.95
  • AR-15 .450 Bushmaster 16" Steel Black Nitride Upper Assembly / Tanker
    AR-15 .450 Bushmaster 16" steel black nitride upper assembly, This drop-in .450 Bushmaster upper will attach to virtually any milspec AR-15 lower assembly. Available in 4150 Steel Black Nitride Finish, with 1 and 24" twist and 12" Moriarti midlength slim mlok.  Barrel&nbs..
    AR-15 .450 Bushmaster 16" steel black nitride upper assembly, This ...
    $299.95$499.95
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  • AR-15 .450 Bushmaster 18" 4150 CMV Upper Assembly / Midlength / Mlok
    AR-15 .450 Bushmaster 18" 4150 CMV Upper Assembly / Midlength / MlokThis drop-in .450 Bushmaster upper will attach to virtually any milspec AR-15 lower. Make sure to enhance your lower with 4.3 heavy buffer for maximum performance of this big cal firearm. Barrel - 18" 4150 CMV barrel, n..
    AR-15 .450 Bushmaster 18" 4150 CMV Upper Assembly / Midlength / Mlo...
    $299.95$449.95
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  • AR-15 .450 Bushmaster 18" Steel Black Nitride Upper Assembly / Mlok
    AR-15 .450 Bushmaster 18" steel black nitride upper assembly, This drop-in .450 Bushmaster upper features 4150 Steel Black Nitride Finish, with 1 and 24" twist and 15" rifle length slim Mlok free float handguards.  Barrel - 18" 4150CMV steel black nitride hbar barrel..
    AR-15 .450 Bushmaster 18" steel black nitride upper assembly, This ...
    $329.95$499.95
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  • AR-15 .450 Bushmaster 7.5" Pistol Upper Assembly / Mlok Free Float
    AR-15 .450 Bushmaster 7.5" Pistol Upper Assembly / Mlok Free Float - Just add this .450 Pistol Flattop Upper to your AR15 Pistol Lower Receiver, and you are ready for the range. This assembly includes 7" heavy profile .450 Bushmaster barrel with slim 7" free-float handguard, available in y..
    AR-15 .450 Bushmaster 7.5" Pistol Upper Assembly / Mlok Free Float&...
    $299.95$499.95
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