Announcing the Ultralight QD Endplate for AR15/M16 pattern rifles. Weighing only 6.5 grams, the endplate is machined from billet 6061-T6 aluminum with milspec Type III anodized finish and a press-fit Titanium QD sling swivel cup. This combination of materials and finishes is ideal for weight reduction that doesn t sacrifice durability or performance. Compatible with both milspec and commercial carbine buffer tubes, requires Castle Nut for installation (not included).