Perfect for building your custom AR15 upper group. Comes with properly installed M4 barrel extension. All barrel sub-assemblies are properly headspaced. ALL NFA RULES APPLYFeatures :"8.0";"Medium Taper Profile"4140 Chrome MolySalt Bath Nitride Finish...

Great choice for your PS90 SBR project. Pair this with a CMMG PS90 Flash hider or thread adapter to complete your SBR.Features :"10.4";"4140 Chrome Moly"Salt Bath Nitride Finish1:9 Twist5.7×28 ChamberThreaded M12x1.0 LH

CMMG IS A LEADING MANUFACTURER OF AR-15 RIFLES, 22LR AR-15 CONVERSION KITS AND ACCESSORIES.Features :Precise ManufacturingLong Term ReliabilityDurable Construction

Sons of Liberty Gun Works barrels just gotten even better. Their Combat V2 Profile barrels are made from 4150CrMov steel, High Pressure Tested and QPQ (Melonite) treated inside and out for extra durability.Features :Carbine Length Gas System4150CrMov...