SPECIFICATIONS MATERIAL: POLYMER COLOR: BLACK LENGTH: 190 mm / 7.5 IN. WEIGHT: 12.5 oz / 0.78 lb. BUFFER TUBE FIT: 29.15 mm / 1.148 IN. (MIL-SPEC) FEATURES - FIT INTO BUFFER TUBE (NOT INCLUDED) AS REPLACEMENT RETRACTABLE STOCK - QUICK-RELEASE SLING MOUNT x 2 ON EACH SIDE OF STOCK - LEFT OR RIGHT SIDE CONVERTIBLE COVER COMPARTMENT FOR 4 CR123A BATTERIES - TWO SLOTS FOR LOOPING SLING THROUGH