16" 450 BUSHMASTER Parkerized - 12" Rail - Competition Muzzle Brake - AR15  Upper Assembly 16" 450 BUSHMASTER Parkerized - 12" Rail - Competition Muzzle Brake - AR15  Upper Assembly 16" 450 BUSHMASTER Parkerized 16" 450 BUSHMASTER Parkerized
SKU: UA45B16PA24B824C_12ML00_CB
AR15parts.com

16" 450 BUSHMASTER Parkerized - 12" Rail - Competition Muzzle Brake - AR15 Upper Assembly

$500.00
$395.00
(You save $105.00)

16" 450 Bushmaster Parkerized Heavy Barrel AR15 Upper Assembly with 12" Rail and Competition Muzzle Brake

The .450 Bushmaster is a rifle cartridge developed by Tim LeGendre of LeMag Firearms, and licensed to Bushmaster Firearms International. The .450 Bushmaster is designed to be used in standard M16s and AR-15s, using modified magazines and upper receiver assemblies. The .450 Bushmaster makes use of .452 in. bullets because of the lower impact velocities and energies would not adequately expand the heavier jacketed .458 in. bullets. Ballistically, the .450 Bushmaster has a rather flat trajectory out to 200 yards; if the firearm is zeroed at 150 yards, the user can expect to see a rise of 1.8 inches at 100 yards, zero at 150 yards, and a drop of 4.9 inches at 200 yards.

Specifications:

  • 16" 450 Bushmaster 4150 Hardened Chrome Moly Steel Heavy Contour Barrel with 1x24 Twist and 5/8x32 Threads. Proper single feed ramp for 450 Bushmaster cartridge. Parkerized finish
  • Milspec forged aluminum upper receiver with forward assist and dust cover assembly installed. Matte black hard coat anodized Mil 8625 Type 3 Class 2. One large single Feed Ramp for big bore cartridges Forged from 7075 T6 aluminum. This receiver has been correctly modified around the ejection port to allow for clearance and proper ejection of the 450 Bushmaster cartridge
  • 12" Narrow Profile Free Float Rail. Very comfortable and very light weight. Your choice of M-LOK or KEYMOD attachment points along the entire length at 3, 6, and 9 positions
  • 0.875 low profile gas block
  • Carbine Gas Tube
  • Competition muzzle brake with crush washer

This upper assembly will fit all standard AR15 lower receivers.

This item is considered "Firearm Parts", not a complete firearm (it has no serialized components). Therefore, it can be shipped directly to you with no FFL transfer required.

You are responsible for knowing federal, state and local laws that may be applicable to this item. AR15Parts.com reserves the right to not ship to addresses where it may not be legal to own this item.

Full Description
Current Stock: 13
Rail Type *
Muzzle Device *
Magazine
Bolt Carrier Group
Charging Handle
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  • Description

    16" 450 Bushmaster Parkerized Heavy Barrel AR15 Upper Assembly with 12" Rail and Competition Muzzle Brake

    The .450 Bushmaster is a rifle cartridge developed by Tim LeGendre of LeMag Firearms, and licensed to Bushmaster Firearms International. The .450 Bushmaster is designed to be used in standard M16s and AR-15s, using modified magazines and upper receiver assemblies. The .450 Bushmaster makes use of .452 in. bullets because of the lower impact velocities and energies would not adequately expand the heavier jacketed .458 in. bullets. Ballistically, the .450 Bushmaster has a rather flat trajectory out to 200 yards; if the firearm is zeroed at 150 yards, the user can expect to see a rise of 1.8 inches at 100 yards, zero at 150 yards, and a drop of 4.9 inches at 200 yards.

    Specifications:

    • 16" 450 Bushmaster 4150 Hardened Chrome Moly Steel Heavy Contour Barrel with 1x24 Twist and 5/8x32 Threads. Proper single feed ramp for 450 Bushmaster cartridge. Parkerized finish
    • Milspec forged aluminum upper receiver with forward assist and dust cover assembly installed. Matte black hard coat anodized Mil 8625 Type 3 Class 2. One large single Feed Ramp for big bore cartridges Forged from 7075 T6 aluminum. This receiver has been correctly modified around the ejection port to allow for clearance and proper ejection of the 450 Bushmaster cartridge
    • 12" Narrow Profile Free Float Rail. Very comfortable and very light weight. Your choice of M-LOK or KEYMOD attachment points along the entire length at 3, 6, and 9 positions
    • 0.875 low profile gas block
    • Carbine Gas Tube
    • Competition muzzle brake with crush washer

    This upper assembly will fit all standard AR15 lower receivers.

    This item is considered "Firearm Parts", not a complete firearm (it has no serialized components). Therefore, it can be shipped directly to you with no FFL transfer required.

    You are responsible for knowing federal, state and local laws that may be applicable to this item. AR15Parts.com reserves the right to not ship to addresses where it may not be legal to own this item.

  • Reviews

    Reviews

    Philip

    OUTSTANDING

    I have made multiple purchases from AR15part.com. Every purchase was perfect. All items were exactly as described. Everything arrived very promptly and it was very well packaged. I only wish all companies acted like this
    Philip

    OUTSTANDING

    I have made multiple purchases from AR15part.com. Every purchase was perfect. All items were exactly as described. Everything arrived very promptly and it was very well packaged. I only wish all companies acted like this
    Maddux

    .450

    great product. fast shipping. wonderful experience.
    Guy

    450 Bushmaster upper assembly

    Very satisfied with this upper. The slim hand guard is desirable to grab and grip, also to have the option to mount fold down sights. I wanted the option to add my own bolt assembly and this purchase had just that. If you're shopping for 450 BM upper, you won't be sorry with this one. It's worth every penny.
    Anonymous

    Won’t be my last purchase

    This was a great purchase, fast shipping, especially during this time and considering uncertainty, I feel better having this
    Rhett Lee

    Solid 450 bushmaster upper

    Love the upper, functions perfectly, no problems (I’ve only had it for a few weeks and haven’t even put 100 rounds through mine yet but it’s exactly what you’re looking for if you want a 16 inch bushmaster
    michael faupel

    450 AR15 Upper

    Excellent product, better than expected
    Michael Hawker

    450 Bushmaster upper

    Very impressed with quality and value. Looking forward to trying it out. Would like a call back about maybe purchasing the bolt carrier group also. Your professional courtesy will be appreciated. Thanks.
    Reid Z

    Shipping and Inspection

    Shipping was very quick, however, I am local to the area if AR15part.com. Upon visual inspection, everything looks good. Coatings are uniform, barrel and handguard are tight, brake is properly clocked. Cleaned and oiled. Assembled to a lower, hand cycled rounds just fine. Plan to shoot in the next week or so and will peer-review with more actionable information.
    Jim Cooper

    450 Bushmaster

    Really fast processing and shipping
  • Details

    Details

    Current Stock: 13
    SKU: UA45B16PA24B824C_12ML00_CB
    Availability: Usually Ships in 24 Hours
    Old SKU: 16450CMU1x24RLMLR