Fully adjustable buttstock assembly to mount to a rifle (A2 Round Standard Tube) Fits all .223 and most.308 AR-style rifles. A1 buttstock screw is included for connecting to A2 standard buffer tube. Interchangeable with standard A1 or A2 buttstocks or any aftermarket buttstock with an overall length of approximately 10.5. Fully Ambidextrous

NOT interchangeable with carbine/collapsable rifles with telescoping assemblies (6-position tubes).

Compatible Buffer Assemblies:

.223 Rifle Buffer Assembly (A2 Round Standard Tube) .308 Rifle Buffer Assembly (A2 Round Standard Tube)