Home > AR15 & AR10 Upper Receiver Assemblies Complete > 450 BUSHMASTER UPPER >

18" 450 Bushmaster Upper Assembly AR 15 Rifle Length Rail
18" 450 Bushmaster Upper Assembly AR 15 Rifle Length Rail


 
Alternative Views:
List Price: $489.99
Our Price: $279.99
Savings: $210.00

Availability:: Usually Ships in 24 to 72 Hours
Product Code: 18450CMU1X24RLMLR


Add A Magazine*:

Choose A Different Muzzle Device*:

Choose Keymod or M Lok Slots*:

Bolt Carrier Group:

Charging Handle:

Color of Upper Receiver ONLY:

Qty:  
Description Additional Info
 

18" 450 Bushmaster Upper Assembly AR 15 Rifle Length Rail


*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" Rifle Length Narrow Profile Free Float Rail. Very comfortable and very light weight. Your choice of Keymod or M Lok slots. Slots run the entire length of our rail at the 3, 6, and 9 o'clock postions. Picatiny rail sections NOT included but are available for purchase on our website if needed. Rail sections easily attach to our rails for adding accessories like bipods, flash lights, grips, lasers, etc.

*18" 450 Bushmaster 4150 Hardened Chrome Moly Steel Barrel with 1x24 twist. Heavy Contour with 5/8x32 muzzle threads. Proper single feed ramp for 450 Bushmaster cartridge. Parkerized finish.

*.750 low profile gas block.

*Mid Length Gas Tube.

*Compact competition muzzle brake with crush washer.

*This upper assembly will fit all standard AR 15 lower receivers.

This item IS NOT A FIREARM!!! It is only "Firearm Parts", so no FFL is needed and it can be shipped directly to you. You are responsible for knowing your state or local laws. We will not ship this item to areas where it is not legal to own..


Average Rating: 5 of 5 Total Reviews: 16 Write a review »

  0 of 0 people found the following review helpful:
 
450 BM May 10, 2019
Reviewer: JUSTIN K from montpelier, OH United States  
I received a 450 bushmaster upper 3 days after I ordered it and it looks and shoots great. Thanks.

Was this review helpful to you?

  0 of 0 people found the following review helpful:
 
Great! April 12, 2019
Reviewer: Anonymous Person from New Mexico  
Great quality for an amazing price.  Hard to find for a comparable proce elsewhere.

Was this review helpful to you?

  2 of 2 people found the following review helpful:
 
Much Better! April 8, 2019
Reviewer: Steve R. from Alabama  
This upper is so much better made than the POS I got from bear creek arsinel.  I like the price of their stuff but the last two uppers I ordered from them both had major issues and terrible accuracy.  AR15Part.com got my upper shipped super fast and it performs not only flawlessly but accurately too!!!  Much better looking upper too.  My new go-to parts place.

Was this review helpful to you?

  0 of 0 people found the following review helpful:
 
450 upper March 29, 2019
Reviewer: Rick Dunahue from Kenton , OH United States  
Product was even better than expected. Clean build, cycled perfectly, very accurate. Will definitely purchase again with confidence.

Was this review helpful to you?

  0 of 0 people found the following review helpful:
 
March 23, 2019
Reviewer: Kristopher Milligan from ALBANY, OR United States  
Fast shipping,

Was this review helpful to you?

View All Customer Reviews