The CHIMERA M203 STA (Stand Alone) grenade launcher unit lets you trim some weight off your rifle by taking that M203 launcher tube off and re-deploying it as a standalone weapon. This unit comprises a short or long S&T M203 polymer (£74) or Double Bell full-metal (£109) under barrel grenade launchers with RE-BUILT trigger to fire TAGinn VOG grenades with 3 types of mounts + lightweight fibre reinforced polymer carrier unit with pistol grip and folding collapsible M4 butt stock and Picatinny rail on top (£165) + TAG Inn KC Shell (£168). The M203 STA is sold as a pyrotechnics accessory, hence is subject to age restriction of 18 or over. Pls visit Ammo & Air page for all types of grenades and extra cartridges. EOTech type HD 551 scope is optional (NOT included). Despite trigger modification (the firing pin was made to push further), Chimera M203 launcher remains fully compatible with TAG Inn Evo Pro air cartridge and MOSCART gas grenades (!)