Rock River Arms 10.5" Chrome Lined bore/chamber, 1/7 twist, H-Bar barrel. 5.56 NATO chamber. Carbine gas system. Built on a flat top receiver with a Troy 11" TRX Extreme Rail and a KX3 Piggy Break.

Complete with RRA bolt group and charging handle. 

These are assembled and test fired by PK Firearms. 

Our Price: each $699.00

In Stock

Rock River Arms 16" Lightweight barrel with 5.56 NATO chamber and 1/9 twist rate. Carbine-length gas system with RRA single rail gas block.  Built on a RRA A4 flat top Receiver.

Complete with RRA bolt carrier assembly and forged charging handle.

These uppers are assembled and test fired by PK Firearms.

Our Price: each $495.00

In Stock

Rock River Arms Flat Top receiver with 16" Wilson, lightweight contour, Carbine gas system, 1/9 twist, 5.56 NATO chamber with a YHM Flip-up front sight and A2 flash hider.

 Includes RRA Bolt carrier assembly and forged charging handle.  

 These are assembled and test fired by PK Firearms.

Our Price: each $529.00

In Stock

Rock River Arms Flat Top receiver and a  16" Wilson, lightweight contour, CAR length gas system, 1/9 twist, 5.56 NATO chamber. The forend is a Yankee Hill Machine 9 Inch Diamond Quad Rail with a A2 Flash Hider.

 Includes RRA Bolt carrier assembly and forged charging handle.  

 These are assembled and test fired by PK Firearms.

Our Price: each $519.00

In Stock

RRA 16" Chrome Lined, Lightweight contour, Carbine Length gas system in 1/9 Twist. Built on a RRA Flat Top Reciever with a Troy 11" Alpha Rail with built in Front Flip Sight.  Lo-Profile gas block and A2 Flash Hider. Includes three small detatchable rails and all mounting hardware.

Complete with RRA Bolt Group and Charging Handle.

These are assembled and test fired by PKFirearms.

Our Price: each $670.00

In Stock

This is one of PK's custom uppers built in a Predator Pursuit style configuration, it gives you the lighter weight of the 16" version with an extra 2" of barrel for a little more velocity. Built with a Rock River Arms 18" heavy match stainless steel barrel, Target Crown, bead blasted, cryo treated in 1/8 twist, .223 Wylde chamber for both 5.56 & .223 calibers. Mid Length gas system. Built on an RRA A4 flat top receiver with a RRA mid-length free float tube and a predator style gas block.  

Complete with RRA bolt carrier assembly and forged charging handle.

These are assembled and test fired by PK Firearms.

Our Price: each $649.00

In Stock

Rock River Arms 16" Wilson chrome moly chrome lined lightweight barrel with 5.56 NATO chamber and 1/9 twist rate. Carbine handguards and steel front sight tower with bayonet lug. A4 flat top Receiver.

Complete with bolt carrier assembly and forged charging handle.

These are assembled and test fired by PK Firearms.

Our Price: each $510.00

In Stock

RRA 16" Chrome Lined, Lightweight contour, Carbine Length gas system in 1/9 Twist.  Built on a RRA Flat Top Reciever with a Troy 11" Alpha Rail. Lo-Profile gas block and A2 Flash Hider.  Includes three small detatchable rails and all mounting hardware.

Complete with RRA Bolt Group and Charging Handle.

These are assembled and test fired by PKFirearms.

Our Price: each $615.00

In Stock

Rock River Arms 20" HBar, 1/9 twist with a .223 Wylde chamber (accepting .223 and 5.56 ammo). Rifle length gas system. Built on a RRA A4 flat top receiver with a Badger Ordnance Tactical Handguard, preditor style gas block and A2 flash hider. Includes 3 short pic rails.

Complete with RRA bolt carrier assembly and forged charging handle.

These uppers are assembled and test fired by PK Firearms.

Our Price: each $625.00

In Stock

Rock River Arms 16" Wilson Air-Gauged Stainless Steel H-Bar,1/8 twist, .223 Wylde chamber (accepting .223 and 5.56 ammo), Midlength gas system. Built on a RRA flat top receiver with a YHM Mid Diamond Rail, GG&G-1297 flip up front sight and gas block and A2 flash hider.

Complete with RRA bolt group and charging handle.

These are assembled and test fired by PK Firearms.

Our Price: each $710.00

In Stock

Rock River Arms 16" Wilson Air-Gauged Stainless Steel H-Bar,1/8 twist, .223 Wylde chamber (accepting .223 and 5.56 ammo), Midlength gas system. Built on a RRA flat top receiver with a YHM 5007 TJ Rail, A.R.M.S. #41BL flip up front sight and gas block and A2 flash hider.

Complete with RRA bolt group and charging handle.

These are assembled and test fired by PK Firearms.

Our Price: each $725.00

In Stock

Rock River Arms Flat Top receiver with a 20" Wilson air-gauged National Match Stainless Steel H-Bar barrel, 1/8 twist, .223 Wylde chamber. The forend is a Rock River Advanced Half Quad aluminum free float tube, rifle length gas system with a RRA .750 single rail gas block.  Muzzle is a standard 1/2 -28 threaded with A2 flash hider. 

 Complete with bolt carrier assembly and forged charging handle.

These are assembled and test fired by PK Firearms. 

Our Price: each $695.00

In Stock

Rock River Arms Flat Top receiver with a 20" Wilson air-gauged National Match Stainless Steel H-Bar barrel, 1/8 twist, .223 Wylde chamber. The forend is a Yankee Hill Machine 5009 15 inch TJ, rifle length gas system with a .750 Lo Pro gas block.  Muzzle is a standard 1/2 -28 threaded with A2 flash hider. 

 Complete with bolt carrier assembly and forged charging handle.

These are assembled and test fired by PK Firearms. 

Our Price: each $675.00

In Stock