MIL-SPEC AR CARBINE RECEIVER EXTENSION TUBE
•Tube is impact extruded from the same 7075 T6 aluminum used in most AR receivers •Inside is coated w/Mil-Spec dry film lubricant that quiets the action & reduces metal-on-metal contact extending the life of your buffer •Grit-blasted non-reflective surface & Mil-Std 171 Lusterless Black smooth-matte coating
