Description

Buy Rock River Arms AR-15 Mountain Upper Receiver Assembly 223 Remington (Wylde) 10.5″ Chrome Moly Barrel 9.5″ Handguard Black Online

The Rock River Arms AR-15 Upper Receiver Assembly is designed to pin onto any mil-spec lower receiver. Just add an optic, or set of sights, and you are ready to send lead downrange!

Features

Flattop upper receiver
Mil-spec compatible
Anodized finish

Specifications

Product Information

Cartridge	223 Remington
Color	Black
Finish	Anodized
Material	Aluminum
Barrel Length	10.5 Inches
Barrel Material	4150 Chrome Moly Steel
Barrel Finish	Black
Twist	1:7 Inches
Threads	1/2″-28
Sights	No
Chrome Lined	No
Gas Block Diameter	0.75 Inches
Gas System Length	Pistol
M4 Feed Ramps	Yes
Upper Receiver Type	A3 Flat-Top
Handguard	9.5″ RRA Mountain
Bolt Carrier Assembly Included	Yes
Muzzle Device	A2 Flash Hider
Country of Origin	United States of America
Compatible With	AR-15