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Knights Armament - SR-15 E3 Mod2 CQB 11.5" - Complete Upper


The SR-15E3 CQB Mod 2’s 11.5” chrome lined, 5.56mm NATO barrel is manufactured for military grade durability, and is free-floated inside a 10.75” URX4 handguard. An improved E3 round-lug bolt design both enhances function and increases bolt life far beyond the industry standard.

Comes with front and rear BUIS, bolt and carrier, charging handle, buffer, three prong QDC flash hider, picatinny rail section, and rail panel kit.


Barrel: 11.5 inch chrome lined, 1:7 twist, chrome lined, hammer forged

Knights Armament - SR-15 E3 Mod2 CQB 14.5" - Complete Upper


The newest redition of the KAC SR-15 E3 Carbine MOD 2 is designed to be a premium upper receiver with KAC's expertise in producing top tier rifles and components for the military and discerning consumers.  

This upper receiver is lightweight, accurate, and durable.  

The proprietary gas system, rail system, and Bolt/Barrel design ensures that this upper can deliver superior performance in this lightweight yet durable package


Rock River Arms 16 inch QMC Upper


The Rock River Arms 16 Inch QMC (Quick Magazine Change) Upper features a Rock River Arms 16 inch H-Bar barrel chambered in 5.56 NATO with a 1:9 twist rate and 1/2-28 threaded muzzle, Mid length gas system, RRA TRO standard handguard with 2 short rail sections and one standard.  Built by Rock River Arms on an R

Rock River Arms 7 inch A4 pistol upper


The Rock River Arms 7" Inch A4 pistol Upper features a Rock River Arms 7 inch Chrome Moly barrel with a 5.56 Nato chamber, 1:9 twist, pistol length gas system, and a 1/2-28 threaded muzzle.  Built on a Rock River Arms forged A4 flat top receiver with a low profile gas block, TRO pistol free float rail, and an A2 flash hider. Included are 3 accessory rails for the hand guard.

Complete with Rock River Arms AR-15 bolt carrier group and forged charging handle.

.204 Ruger Varmint A4 Complete Upper


.204 Ruger Varmint A4 Complete Upper 

The Rock River Arms .204 Ruger 20 Inch - Varmint A4 upper features a Rock River Arms 20 Inch fluted stainless steel, air gauged, cryo-treated bull barrel chambered in .204 Ruger with a 1:12 twist and rifle length gas system.  Built on a Rock River Arms forged A4 flattop receiver with a Rock River Arms TRO-STD handguard and a .936 low profile gas block.

Complete with RRA bolt carrier group and RRA charging handle

Rock River Arms 6.8 SPC Coyote Carbine Upper Half SPC0592


Rock River Arms 6.8 SPC Coyote Carbine Upper Half SPC0592