AR15 BUFFER TUBE KIT—STANDARD END PLATE, CARBINE Manufactured to Mil-Spec dimensions. Buffer Tube Kit Includes: Buffer Tube, 7075-T6 6 Position, Hard Coat Anodized Carbine Buffer—3.0 ounces Castle Nut, Phosphate Endplate, Phosphate Buffer Spring, Standard Music Wire 100% American... MSRP: Was: Now: $49.95 Add to Cart