Rock River Arms A4 Upper Receiver 350 Legend 16"
$700.28
3 in stock
Complete AR-15 upper receiver in 350 Legend with 16" chrome moly barrel, free float M-LOK handguard, operator muzzle brake, bolt carrier group, and charging handle.
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Rock River Arms A4 Tactical Upper Receiver
This is a complete, ready-to-install upper receiver assembly from Rock River Arms, chambered in the efficient 350 Legend cartridge. It represents a thoughtful approach to modern rifle building—everything you need in one package.
Barrel and Action
- 16" chrome moly barrel with 1:16 twist rate, optimized for 350 Legend ballistics
- Includes complete bolt carrier group and charging handle assembly
- Anodized black finish for durability and corrosion resistance
Handguard and Accessories
- 13" free float M-LOK rail provides a rigid mounting platform while keeping weight minimal
- RRA Operator Muzzle Brake (1/2-36 thread) helps manage recoil and muzzle rise
- Lightweight design without sacrificing functionality
What's Included
- Complete upper receiver assembly
- Bolt carrier group
- Charging handle
- One 10-round magazine
- Ready to mount on any AR-15 lower receiver
The 350 Legend Advantage
The 350 Legend offers hunters and shooters a middle ground between pistol cartridges and full-power rifle rounds. It delivers effective performance for medium game while remaining controllable and economical to shoot. This upper makes it simple to build a dedicated 350 Legend rifle without guesswork.
Features
- .350 legend
- 16 inch chrome moly, 1:16 twist
- rra operator brake, 1/2-36 thread
- low profile gas block, car length gas system
- rra 13 inch extended lightweight free float rail
- bolt carrier group, charging handle assembly
- (1) magazine, (10) rounds
Attributes
Accessories:
Magazine
Barrel Length:
16"
Caliber:
.350 Legend
Capacity:
10 Round
Color:
Black
Finish:
Anodized
Fit:
AR-15
Model:
Tactical Carbine
Type:
Upper Receiver
