Luth-AR’s .223 Mil-Spec Carbine Buffer Tube Complete Assembly Kit for AR-15 rifles includes a Mil-Spec diameter carbine buffer tube” standard carbine recoil buffer” carbine recoil spring” receiver end plate and castle nut.
Luth-AR Mil-Spec Dia Carbine Buffer Tube Complete Assembly Fits AR-15 Rifles, with Buffer, Buffer Tube, & Spring, Black 223-M-BAP
