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Top Sellers

US Tactical Ind. Enhanced Stainless Steel 5.56/9mm Firing Pin Retainer ** 2 Pack**
US Tactical Ind. Enhanced Stainless Steel 5.56/9mm Firing Pin Retainer ** 2 Pack**
$19.99 $4.49
CMMG, Magazine, .458 SOCOM, 10Rd, Black Finish
CMMG, Magazine, .458 SOCOM, 10Rd, Black Finish
$29.99 $27.99
MMC Arms
MMC Arms"Earthquake" AR-15 Featuring An Anderson Upper Receiver 16" .450 Bushmaster 1-24T 4150 CMV Heavy Barrel 15" M-Lok Handguard (Assembled or Unassembled)
$789.99 $459.99

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  2. Calibers
  3. .450 Bushmaster
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Shop By | .450 Bushmaster


The .450 bushmaster is a do it all hunting round. You can hunt many different types of game with this round and also defend yourself against many predators out in the wilderness. It's also a blast to shoot at the range. This is a straight walled, center fire cartridge for those states that require that for hunting. Here at MMC Armory we offer a wide variety of parts for this caliber as well as complete build kits. Check out our MMC Combos to save money and to make your build or upgrade hassle free.
  • Barrels | .450 Bushmaster Compatible
  • Bolt Carrier Groups | .450 Bushmaster Compatible
  • Finish Your Build Kits | .450 Bushmaster Compatible
  • Magazines | .450 Bushmaster Compatible
  • Muzzle Devices | .450 Bushmaster Compatible
  • Upper Builds | .450 Bushmaster Compatible
  • Upper Build Starter Kits | .450 Bushmaster Compatible

Products [26]

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ELD Performance
ELD Performance "Fitter" Cryo Treated .450 Bushmaster 16" 4150 Cr Mo H-Bar 1:24 Twist Barrel
$187.99 $169.99 Sale
Out of Stock
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Recoil Technologies Premium AR-15 450 Bushmaster & 458 Socom Bolt Carrier Group BCG
Recoil Technologies Premium AR-15 450 Bushmaster & 458 Socom Bolt Carrier Group BCG
$195.00 $94.95 Sale
Out of Stock
Add To Cart
US Tactical Ind. Enhanced Stainless Steel 5.56/9mm Firing Pin Retainer ** 2 Pack**
US Tactical Ind. Enhanced Stainless Steel 5.56/9mm Firing Pin Retainer ** 2 Pack**
$19.99 $4.49 Sale
In Stock
Add To Cart
Gauntlet Arms
Gauntlet Arms "Sepal" 18" .450 Bushmaster 1-24T 4150 CMV Phosphate Steel HBAR
$169.99 $114.99 Sale
In Stock
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Davidson Defense 450 Bushmaster and 458 Socom BCG
Davidson Defense 450 Bushmaster and 458 Socom BCG
$189.99 $119.99 Sale
Out of Stock
Add To Cart
MMC Arms
MMC Arms"Earthquake" AR-15 Featuring An Anderson Upper Receiver 16" .450 Bushmaster 1-24T 4150 CMV Heavy Barrel 15" M-Lok Handguard (Assembled or Unassembled)
$789.99 $459.99 Sale
In Stock
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Gauntlet Arms
Gauntlet Arms "Caliburn" AR-15 10.5" 450 Bushmaster, Carbine Gas, Hbar, 1-24T Parkerized Barrel
$204.99 $144.99 Sale
Out of Stock
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MMC Arms
MMC Arms"Fiery Furnace" AR-15 Featuring Aero Precision Upper Receiver 16" .450 Bushmaster 1-24T 4150 CMV Heavy Barrel 15" KeyMod Handguard (Assembled or Unassembled)
$509.99 $309.99 Sale
Out of Stock
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MMC Arms
MMC Arms"Butch" AR-15 Featuring Aero Precision Upper Receiver 18" Ultra-Match .450 Bushmaster 1-24T 4150 CMV Heavy Barrel 16.5" M-Lok Handguard (Assembled or Unassembled)
$504.99 $259.99 Sale
Out of Stock
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MMC Arms
MMC Arms"Elbrus" AR-15 Featuring Aero Precision Upper Receiver 16" .450 Bushmaster 1-24T 4150 CMV Heavy Barrel 15" M-Lok Handguard (Assembled or Unassembled)
$489.99 $314.99 Sale
In Stock
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Gauntlet Arms
Gauntlet Arms "Monado" AR-15 16" 450 Bushmaster, Carbine Gas, HBar, 1:24T Phosphate Barrel
$164.99 $109.99 Sale
Out of Stock
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Davidson Defense
Davidson Defense "Buzz!" AR-15 Upper Receiver 18" .450 Bushmaster 4150 CMV 1-24T Barrel 15" M-Lok Handguard (Assembled or Unassembled)
$439.99 $269.99 Sale
Out of Stock
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Davidson Defense
Davidson Defense "Carnelian" AR-15 Upper Receiver 16" .450 Bushmaster 4150 CMV 1-16T Heavy Barrel 15" M-Lok Handguard (Assembled or Unassembled)
$524.99 $269.99 Sale
In Stock
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Davidson Defense
Davidson Defense "Andesite" AR-15 Upper Receiver 16" .450 Bushmaster 4150 CMV 1-16T Heavy Barrel 13" M-Lok Handguard (Assembled or Unassembled)
$514.99 $259.99 Sale
Out of Stock
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Davidson Defense
Davidson Defense "Sigiriya" AR-15 Upper Receiver 16" .450 Bushmaster 4150 CMV 1-24T Heavy Barrel 15" M-Lok Handguard (Assembled or Unassembled)
$649.99 $334.99 Sale
In Stock
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MMC Arms 'Kozlice' AR-15 Rifle Complete Upper Build Kit Featuring Davidson Defense Upper .450 Bushmaster 16
MMC Arms 'Kozlice' AR-15 Rifle Complete Upper Build Kit Featuring Davidson Defense Upper .450 Bushmaster 16" 4150 CMV 1-24T 13.5" KeyMod Handguard (Assembled or Unassembled)
$699.99 $384.99 Sale
In Stock
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