The Radian Weapons Ulralight QD Endplate weighs only 6.5 grams and features a press-fit Titanium QD sling swivel cup. This provides an ultra low profile sling point without adding any bulk or weight to the rear of the firearm. Installs with a standard milspec carbine buffer tube and castle nut (not included). Includes: Receiver extension end plate with QD sling point Material: 6061-T6 billet aluminum Finish: Black milspec Type III anodized Weight: 6.5 grams Compatibility AR-15/M16 and AR-9 platforms