Tippmann M4 Carbine Airsoft Gas Blowback HPA Rifle - With Two Full Rail Setups: Each has had the TDC (Top Dead Center) Mod. - Full setup for CQB role or DMR just pop out the two pins and attach the other rail. - Selling with a 3000 PSI Tank and High Pressure Line - The Rifle also has the Heavy Bolt Installed (gives it an extra hard kick for more realism to shooting a real steel rifle) Advanced Airsoft Tippmann Recoil Enhancement The Deal Includes: The CQB Rail, the DMR Rail, the lower, tank, and airline. (No scopes or attachments) Buyer pays $30 for shipping