Rock River Arms MID A4 16" Classic Upper .450 Bushmaster 1:24 M-LOK Mid-Length with BCG and CH, Black
$567.79 at MidwayUSA · 4 stores
In stock Sale
Best price
$424.99at Brownells
checked Sep 30, 2026
Where to buy
| Store | Price | Availability | Buy | Add to build |
|---|---|---|---|---|
| Brownells | $424.99checked Sep 30, 2026 | Check store | Buy at Brownells |
Prices and availability change often, so confirm on the store's site before you buy. We may earn a commission from these links.
About this part
The AR-15 16" 450 Bushmaster Upper Receiver KeyMod Black is a 16" .450 Bushmaster upper receiver from ATI. One store lists it, Brownells at $424.99.
Fits and works with
- Caliber
- .450 Bushmaster · Shop matching ammo
- Bolt
- .458 SOCOM / .450 Bushmaster · Bolt carrier groups
- Barrel length
- 16" · Handguards
Specifications
- Manufacturer
- ATI
- Color
- Black
- Platform
- AR-15
- Barrel length
- 16"
- Length
- 16
From the manufacturer
Add Versatility to Your AR-15 Platform
The ATI Complete 450 Bushmaster AR-15 Upper Receiver allows AR-15 rifle owners to instantaneously add versatility to their firearm platform with a simple upper-receiver switch that allows them to add on a whole new caliber.
The ATI Complete 450 Bushmaster AR-15 Upper Receiver comes with every component needed to drop onto a lower receiver and start shooting. Simply pop open the takedown pins located on your lower receiver, take off your standard upper and replace it with this assembly. The ATI upper receiver assembly even includes the charging handle and bolt carrier group!
- Color: black
- Barrel length: 16 inches
- Barrel twist rate: 1:16
The ATI Complete 450 Bushmaster AR-15 Upper Receiver also features a 15-inch handguard with KeyMod attachment points for all of your accessories.
Similar upper receiver
Rating
No ratings yet
Log in to rate this part.
Comments
Please log in to read and leave comments.