Tokyo Marui AKX GBB The Tokyo Marui AKX gas device is Tokyo Marui's attempt to modernize the aging AKM or AK47 platform by making it an SBR, giving it Picatinny top rails, M-Lok handguards, and foldable stock. With these out-of-the-box modifications of the Tokyo Marui AKM gas device, the AKX allows you to take it to a CQB arena and gives you the option to mount different accessories to your gas device such as flashlights, lasers, and optics. which the original AKM could not provide. Features: Durable stamped steel receiver construction 7" aluminum alloy M-LOK RIS w/ 3x Picatinny / 1913 segments included Large 19mm piston provided realistic blowback action Top Picatinny / 1913 rail for optics Adjustable front sight Lightweight skeletonized folding stock FPS Range: 270-300 Specifications: Length (Folded / Unfolded): 545mm / 745mmWeight: 3560gInner Barrel: ~200mmThread Direction: 14mm CCWMagazine Capacity: +35 roundsGas Type: Green GasFire Modes: Semi/Full-Auto, SafetyMuzzle Velocity: ~0.84 Joules (Measured with 0.20g BBs)Hopup: Yes, Adjustable