JE Machine AR-15 long contoured pistol length buffer tube is built to Mil-Spec standards. It has a surface reduction machining for less restriction resulting in smooth operation. The fluted under-belly is for pinning SB braces and KAK Shockwave Blades.

Specifications:
Impact Extruded 7075 T6 ASTM Aircraft Grade US Aluminum
Surface Treatment: Per Mil-A-8625 F, Type III, Class 2 Anodize
Long Contour Machining
Pentagon Tail-Cap
Made in the USA

Firearms Accessories JE Machine Buffer Tube 811577033601