300 AAC Upper Assemblies

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  • AR-15 300 AAC BLK 10.5" Nitro-Met Keymod Upper Assembly with Socom Style Brake
    AR-15 300 AAC BLK 10.5" Nitro-Met Keymod Upper Assembly with Socom Style Brake -is a perfect addition to your AR-15 build. All you need is a case of ammo to change your standard AR 5.56 to a new 300 Blackout upper.Assembly Features:Chamber - 300 AACBarrel Twist - 1x7Barrel Thread ..
    AR-15 300 AAC BLK 10.5" Nitro-Met Keymod Upper Assembly with Socom ...
    $249.95$399.95
  • AR-15 300 AAC BLK 7.5" KEYMOD UPPER ASSEMBLY WITH FLASH CONE
    AR-15 300 AAC BLK 7.5" KEYMOD UPPER ASSEMBLY WITH FLASH CONEAction: Semi-auto Gas System: Pistol Length Gas System Chamber: 300 AAC Twist Rate: 1/7  Muzzle Device: Flash Cone Can    Barrel: 7.5" 300 AAC M4 hbar contour, phosphate finish, heat tr..
    AR-15 300 AAC BLK 7.5" KEYMOD UPPER ASSEMBLY WITH FLASH CONEAction:...
    $249.95$349.95
  • AR-15 300 AAC blackout 10.5" stainless steel classic keymod upper assembly
    AR-15 300 AAC blackout 10.5" stainless steel classic keymod upper assembly is a perfect addition to your AR pistol. No other modifications to your AR-15 is required. Uses standard AR-15 BCG. All you need is 300 BLK ammo and this upper - and you have a new AR pistol. The 10.5" 300 BLK upper includes:..
    AR-15 300 AAC blackout 10.5" stainless steel classic keymod upper a...
    $229.95$399.95
  • AR-15 300 AAC blackout 16" stainless steel "Eagle Claw" complete upper assembly
    AR-15 300 AAC blackout 16" stainless steel "Eagle Claw" complete upper assembly. 300 blackout caliber uppers use your standard .223/5.56 bolt carrier group and magazines! No special bolts or magazines to buy to get into a new caliber!   Barrel - 16" 416 stainless steel hbar contour bar..
    AR-15 300 AAC blackout 16" stainless steel "Eagle Claw" complete up...
    $399.95$429.95
  • AR-15 300 AAC blackout 16" stainless steel black diamond fluted upper assembly
    AR-15 300 AAC blackout 16" stainless steel black diamond fluted upper assembly. 300 blackout caliber uppers use your standard .223/5.56 bolt carrier group and magazines! No special bolts or magazines to buy to get into a new caliber!   Barrel - 16" 416 stainless steel hbar contour barr..
    AR-15 300 AAC blackout 16" stainless steel black diamond fluted upp...
    $449.95
  • AR-15 300 AAC blackout 16" stainless steel black spiral fluted upper assembly
    AR-15 300 AAC blackout 16" stainless steel black spiral fluted upper assembly. 300 blackout caliber uppers use your standard .223/5.56 bolt carrier group and magazines! No special bolts or magazines to buy to get into a new caliber!   Barrel - 16" 416 stainless steel hbar contour barre..
    AR-15 300 AAC blackout 16" stainless steel black spiral fluted uppe...
    $429.95