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  •  .458/ 450 BOLT CARRIER GROUP / NITRIDE
    MPI inspected8620 STEEL CARRIER9301 STEEL HEADAUTO CARRIERMELONITE FINISHFOR 458 SOCOM OR SIMILAR (.472 BOLT FACE) ..
    MPI inspected8620 STEEL CARRIER9301 STEEL HEADAUTO CARRIERMELONITE ...
    $129.95$189.95
  • AR-15 .450 Bushmaster 10" "Thumper" Pistol Upper Assembly
    AR-15 .450 Bushmaster 10" "Thumper" Pistol 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" heavy profile .450 Bushmaster barrel with slim 10" free-float handguard, available in your ch..
    AR-15 .450 Bushmaster 10" "Thumper" Pistol Upper Assembly - &n...
    $299.95$499.95
  • AR-15 .450 Bushmaster 10" Pistol Upper Assembly w/ Flash Can
    AR-15 .450 Bushmaster 10" Pistol 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" heavy profile .450 Bushmaster barrel with slim 12" free-float handguard, available in your choice of ml..
    AR-15 .450 Bushmaster 10" Pistol Upper Assembly -  Just a...
    $299.95$499.95
  • AR-15 .450 Bushmaster 10.5" Pistol Upper Assembly / Shark
    AR-15 .450 Bushmaster 10.5" Pistol Upper Assembly / Shark -  Just add this .450 Pistol Flattop Upper to your AR15 Pistol Lower Receiver, and you are ready for the range. This assembly includes 12" heavy profile .450 Bushmaster barrel with slim 12" free-float handguard, Barrel ..
    AR-15 .450 Bushmaster 10.5" Pistol Upper Assembly / Shark -&nb...
    $349.95$499.95
  • AR-15 .450 Bushmaster 12" Pistol Upper Assembly w/ Flash Can
    AR-15 .450 Bushmaster 12" Pistol 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 12" heavy profile .450 Bushmaster barrel with slim 12" free-float handguard, available in your choice of ke..
    AR-15 .450 Bushmaster 12" Pistol Upper Assembly -  Just a...
    $399.95$499.95
  • AR-15 .450 Bushmaster 16" stainless steel upper assembly / Mlok
    AR-15 .450 Bushmaster 16" stainless steel upper assembly / Mlok, This drop-in .450 Bushmaster upper will attach to virtually any standard AR-15 lower assembly.  Barrel - 16" 416R stainless steel  hbar barrel, non-fluted. Chambered in .450 Bushmaster. Button rifled with 1-24 rh..
    AR-15 .450 Bushmaster 16" stainless steel upper assembly / Mlok, Th...
    $399.95$499.95
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  • AR-15 .450 Bushmaster 16" steel black nitride upper assembly
    AR-15 .450 Bushmaster 16" steel black nitride upper assembly, This drop-in .450 Bushmaster upper will attach to virtually any standard AR-15 lower assembly. Available in 4150 Steel Black Nitride Finish, with 1 and 24" twist and rifle length slim mlok free float handguards.  Ba..
    AR-15 .450 Bushmaster 16" steel black nitride upper assembly, This ...
    $299.95$499.95
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  • AR-15 .450 Bushmaster 18" steel black nitride upper assembly
    AR-15 .450 Bushmaster 18" steel black nitride upper assembly, This drop-in .450 Bushmaster upper will attach to virtually any standard AR-15 lower assembly. Available in 4150 Steel Black Nitride Finish, with 1 and 24" twist and rifle length slim keymod free float handguards.  ..
    AR-15 .450 Bushmaster 18" steel black nitride upper assembly, This ...
    $349.95$499.95
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  • AR-15 .450 Bushmaster 7" Pistol Upper Assembly / Mlok Free Float
    AR-15 .450 Bushmaster 7" 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 ..
    AR-15 .450 Bushmaster 7" Pistol Upper Assembly / Mlok Free Float&nb...
    $349.95$499.95
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  • AR-15 Moriarti Big Bore Complete Lower Receiver / A2 Grip, No Stock - .50BE, .450BM, .458 Cal
    AR-15 Moriarti Big Bore Complete Lower Receiver / A2 Grip, No Stock - .50BE, .450BM, .458 Cal.  This Lower Receiver is the perfect base for your custom Big Bore Build - 458, 450 and 50Cal.  SPECS: Moriarti Forged Stripped Lower Receiver - Anodized BlackA2 Grip - BlackMil-spec..
    AR-15 Moriarti Big Bore Complete Lower Receiver / A2 Grip, No Stock...
    $249.95$299.95
  • MORIARTI .450 BUSHMASTER "THUMPER" 10.5" PISTOL | SBA3 BRACE
    MORIARTI .450 BUSHMASTER "THUMPER" 10.5" PISTOL | SBA3 BRACE. This AR Pistol features a forged aluminum lower AR pistol with metal mil-spec parts kit and installed SB Tactical SBA3 5-position pistol arm stabilizing brace. This model also has a 3″ Flash Can attached to the 10.5″ barrel that is n..
    MORIARTI .450 BUSHMASTER "THUMPER" 10.5" PISTOL | SBA3 BRACE. ...
    $799.95$1,150.00
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  • MORIARTI .450 BUSHMASTER 16" SEMI AUTO RIFLE | MAGPUL MOE
    MORIARTI .450 BUSHMASTER 16" SEMI AUTO RIFLE | MAGPUL MOE. This AR rifle features a forged aluminum lower with metal mil-spec parts kit and installed Magpul Moe milspec 6 position stock. Made in USA to mil-spec tolerances. Must be shipped to FFL. Caliber: .450 BushmasterOperating Syst..
    MORIARTI .450 BUSHMASTER 16" SEMI AUTO RIFLE | MAGPUL MOE. Thi...
    $849.95$1,149.95
  • AR-15 Heavy Tungsten Carbine Buffer 4.3oz - 458 Socom/450BM/50BEU
    There are many ways to smooth the operation of a AR-15 Carbine. One of the most cost effective and quickest upgrades available, is installation of a KVP Heavy Tungsten Buffer. There are many added benefits once you install a Kaw Valley Precision tungsten buffer. Benefits include: increased reliabili..
    There are many ways to smooth the operation of a AR-15 Carbine. One...
    $34.95

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450 Bushmaster Rifles Posted by on Mar 30, 2018.

450 Bushmaster Rifles: Based on popular demand, Moriarti Armaments is proud to present an addition to its AR-15 family, a 450 Bushmaster round. The uppers.. more..