Tokyo Marui P320 Full Size GBB Unboxing
OptimusPrime
10 Dec 2025
R3D Airsoft Designs take an initial look at the recently released Tokyo Marui P320 Full Size gas blowback pistol. This GBB pistol features a Modular Fire Control Unit (FCU) that can be detached using the correct procedure, mirroring its real-world counterpart. This core unit houses the trigger and hammer mechanisms and bears a unique, laser-etched serial number, enhancing the pistol's faithful replication.
Internally, the P320 employs an under-hammer mechanism with a 15mm large-diameter piston, maximising piston stroke in a compact space for powerful blowback action. A Rail-Integrated Engine ensures stable gas output and reliable cycling by preventing misalignment between the FCU and the engine. The slide is made from reinforced resin, and its design includes a tilt-assist outer barrel mechanism to promote smooth, consistent operation.
The pistol offers realistic controls, including a functional ambidextrous safety and a takedown lever with a safety mechanism. The grip features a non-slip pattern created via laser-etched moulds for better handling. It uses a variable hop-up system for trajectory adjustment and comes with a durable, die-cast magazine that holds 26 rounds, designed for reliable performance.