Mil-Spec 6 Position Buffer Tube, Spring, Buffer, Dual Loop Sling Adapter End Plate, Castle Nut .223 Carbine Rifle Kit - MAR047-B

Mil-Spec Buffer Tube Kit includes: - Six-position receiver tube precision-machined from 6061/T6 aircraft-grade aluminum designed to fit most .223/5.56 receivers - 3 oz Mil-Spec buffer - Mil-Spec buffer spring - Steel castle nut featuring four slots and a hole for an older style wrench - Steel end plate with a dual loop sling adapter for versatile carrying options This item is designed to attach a Mil-Spec dimension stock to your AR-15 lower receiver. Compatible with standard AR-15 receiver extensions. This item cannot be shipped to California, Illinois, or Washington.