PK Firearms Logo

Your home for AR-15 parts & accessories!

PK Firearms Logo

Rock River Arms 16 Inch R4 - CHROME-LINED - LIGHTWEIGHT – YHM 5002 TJ Rail

$599.00
SKU: 
5139

The Rock River Arms 16 Inch R4 - CHROME-LINED - LIGHTWEIGHT – YHM 5002 TJ Rail upper features a Rock River Arms 16 inch R4, chrome-lined, lightweight profile barrel, chambered in 5.56 NATO with a 1:9 twist, carbine gas system, and a 1/2-28 threaded muzzle. Built on a Rock River Arms flat top receiver with a YHM 5002 TJ rail and an A2 flash hider.

These are assembled and test fired by PK Firearms.

Complete with M16 bolt carrier group and forged charging handle.

FOR MORE INFORMATION ABOUT PK FIREARMS CUSTOM UPPERS PLEASE CLICK HERE