Home > AR15 & AR10 Upper Receiver Assemblies > 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: $379.99
Savings: $110.00

Quantity in Stock:(Out of Stock)
Product Code: 18450CMU1X24RLMLR


Choose A Different Muzzle Device*:

Choose Rail Type*:

Add Magazine:

Add Bolt Carrier Group:

Add Charging Handle:

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: Average Rating: 5 of 5 5 of 5 Total Reviews: 33 Write a review »

  0 of 0 people found the following review helpful:
 
5 of 5 Bought two October 29, 2020
Reviewer: Gary Ruisinger from Kansas City, MO United States  
Perfect assembly, perfect function. Was so pleased with my first purchase I bought a second. Not one hitch since round one.

Was this review helpful to you?

  0 of 0 people found the following review helpful:
 
5 of 5 Great Shooter August 25, 2020
Reviewer: Jeffery Pileri from Leander, TX United States  
1st time out with it,shoots MOA.  Well worth the money.

Was this review helpful to you?

  0 of 0 people found the following review helpful:
 
5 of 5 .450 Bushmaster July 6, 2020
Reviewer: Michael Lieberman from Watervliet , MI United States  
First things first. I don't write reviews normally. You guys did a great job with how fast you shipped everything out and package arrived as described in 3 days after ordering even with everyone buying up everything with all that's going on right now you still managed pondo a great job. Will be back again. Thank you.

Was this review helpful to you?

  0 of 0 people found the following review helpful:
 
5 of 5 Great quality, unbelievably fast shipping! June 29, 2020
Reviewer: DEREK SNYDER from Homestead, FL United States  
This upper showed up about 9 days after I ordered it, and right out of the box, I was impressed with the quality of everything. From the muzzle brake to the barrel to the upper receiver itself.. it's all well built and groups tight enough to make one big ragged hole at 100 yards. I'm glad I bought one when I did, they've shown as "out of stock" since 2 days after I bought mine.

Was this review helpful to you?

  0 of 0 people found the following review helpful:
 
5 of 5 18" 450 Bushmaster Upper Assembly AR 15 Rifle Leng June 29, 2020
Reviewer: Anonymous Person from Weatherford, TX United States  
No issues. Shoots great.

Was this review helpful to you?

View All Customer Reviews