ARPartsFinder In-stock AR-15 & AR-10 parts across every retailer. We find them, you buy direct.

Rock River Arms AR-15 Upper Receiver Assembly 450 Bushmaster 16" Stainless Barrel M-LOK Handguard Black

Name: Rock River Arms AR-15 Upper Receiver Assembly 450 Bushmaster 16" Stainless Barrel M-LOK Handguard Black
Brand: MidwayUSA
Price: 741.99 USD
Availability: InStock

MidwayUSA · Complete Uppers

$741.99 In stock

View at MidwayUSA

Current: $741.99
Lowest seen: $741.99
Highest seen: $741.99

Tracked since May 29, 2026 · price unchanged so far.

Rock River Arms AR-15 Upper Receiver Assembly 450 Bushmaster 16" Stainless Barrel M-LOK Handguard Black

Price history · the price at each change, across the full time tracked

Confirm

How do you want to save?

More