We have a large inventory of AR-15 Pistol Parts. From Pistol Length AR-15 Gas Tubes, AR-15 Pistol Length Rail Systems, AR-15 Pistol Buffer Tubes and more! Building an AR-15 Pistol has never been more popular since the popularity of the SB15 Sig Arm Brace. We carry specialty Sig Brace Buffer Tube Kits to make shooting with your AR-15 Pistol more enjoyable. We also stock a large variety of AR-15 Pistol Uppers with some cool custom looks that you won’t see anywhere. Everything is in stock and ships same or next day.