The ACE Pistol tube Assembly Uses a carbine buffer and spring for the ultimate in reliability. The overall length is only 7” from the back edge of the receiver. Includes: 1.25” ambidextrous sling mount, billet machined gusset (to retain detent and keep extension from unscrewing), special short receiver extension tube, foam overtube (you cut to length), CAR buffer and spring. The DSC Pistol Tube Assembly is primarily the same, however it does not have the outer foam cover, and the tube has the standard end plate.
SPECS: Outside Diameter of 1.187 on the smooth portion.