It's the turn of Golgy, a Sunday Gamer, to review the Poseidon/CSI XO P-1 Gas Blowback Pistol. The CSI/Poseidon XO P-1 BK GBB pistol is a unique airsoft gun featuring a boldly cut slide with independent front section and relocated sights for stable, blowback-unaffected aiming. It offers versatility with 20mm rail conversion and RMR mount compatibility, and boasts semi/full switching function powered by POSEIDON and housed in an ORION lower frame.