This is the HPI Racing Cap Head Screw M4x8mm 6 Pcs! This RC Accessory is compatible with most HPI Savage model RCs!
Are you looking to upgrade your Airsoft Guns inner and oter barrel? Then you need to look at the JBU Airsoft 6.01mm Tightbore Barrel 112.35mm WE 5.1/1911 GBB!
Take a look at the Lancer Tactical Airsoft Single Point Sling.