Luth-AR Fixed Rifle Length Buffer Tube Complete Assembly Fits AR-15 Rifles, with Buffer, Buffer Tube, & Spring, Black BAP-1

Timber Creek Outdoors Buffer Tube Kit for AR-15, Red - ARBTKR

Timber Creek Outdoors Buffer Tube Kit for AR-15 - Lightweight and Durable in Blue Finish - ARBTKB

Timber Creek AR Buffer Tube, Black - AR BT BL

Timber Creek Outdoors Buffer Tube Kit for AR-15, Robin's Egg Blue - ARBTKRE

ONE HORSE AR15 Buffer Tube Kit Carbine Buffer

GUNTEC AR15 PISTOL BUFFER TUBE KIT ANODIZED BLACK

Luth-AR Mil-Spec Dia Carbine Buffer Tube Complete Assembly Fits AR-15 Rifles, with Buffer, Buffer Tube, & Spring, Black 223-M-BAP