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Rock River Arms 18 Inch - Varmint A4 Upper

$629.00
SKU: 
4280

The Rock River Arms 18 Inch - Varmint A4 upper features a Rock River Arms 18 Inch stainless steel, air gauged, cryo-treated bull barrel chambered in .223 Wylde with a 1:8 twist and rifle length gas system.  Built on a Rock River Arms forged A4 flattop receiver with a Rock River Arms TRO-MID handguard and a .936 low profile gas block.



MCR 12.5" Adjustable Heavy Barrel

$623.00
SKU: 
4350

Complete barrel assembly for use with MCR® rifles and upper receiver assemblies. Includes barrel extension with fixed headspace, gas block assembly, 4 position regulator, piston, flash hider and dovetail cover. 100% Made In USA.



MCR Quick-Change Barrel Handle Assembly

$120.00
SKU: 
4351

Permits safe and easy handling of hot Quick-Change Barrels! Fits all models of MCR®, Shrike 5.56™ and military AMG-2.



MCR Extended Bolt Catch

$63.00
SKU: 
4353

Fits in a mil-spec AR15/M4/M16 lower receiver. For use with MCR® upper receiver assemblies, provides the necessary clearance for the wider MCR® upper receiver. Made In USA.


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