KJWorks MK1 Fishbone Gas Blowback Pistol

Command medium-to-long engagement distances with stealth, punchy velocity, and aggressive styling in the KJWorks MK1 Fishbone Gas Blowback Pistol. Replicating the iconic rimfire target pistol platform popularized by Ruger, KJW’s specialized "Fishbone" custom variant elevates this classic field-proven sidearm with integrated modular optics rails, aggressive skeletal styling, and tournament-grade gas economy.

Constructed with a heavy-duty metal upper receiver, barrel assembly, and reinforced polymer lower frame, the MK1 Fishbone combines rugged durability with balanced handling. What sets the Fishbone variant apart is its distinct CNC-styled skeletonized upper barrel sleeve, featuring angled "fishbone" cooling cutouts and seamlessly integrated 20mm Picatinny rails on both top and bottom planes. The top rail provides an uninterrupted mounting surface for mini red-dot sights, holographic reflex optics, or low-power handgun scopes, while the under-barrel rail allows operators to attach tactical flashlights or target lasers. The ergonomic grip frame features textured diamond checkering and a thumb rest, ensuring a rock-solid grip in all weather conditions.

Internally, the MK1 utilizes a direct-action gas system where nearly 100% of the expanding propellant gas is channeled directly behind the BB rather than being diverted to cycle a heavy slide. This design provides legendary gas efficiency, rock-solid consistency across varying ambient temperatures, and an exceptionally quiet muzzle report that can be made virtually silent with the addition of a suppressor adapter. The pistol is equipped with an internally adjustable hop-up unit, allowing players to tune backspin for flat, rifle-like trajectory with heavy 0.25g to 0.30g ammunition.

Feeding from a slim, all-metal 17-round drop-free Green Gas stick magazine, the MK1 Fishbone produces an authoritative muzzle velocity of approximately 360 to 390 FPS (using 0.20g BBs), easily out-ranging most conventional gas blowback pistols on the skirmish field. The simple, mechanical double-action trigger pull cycles the internal feed mechanism smoothly with every shot. Whether deployed as a silent sniper’s backup, a lightweight primary for covert woodland flanking, or a high-precision target plinker, the KJW MK1 Fishbone Gas Pistol delivers unparalleled FPS-per-shot efficiency, distinctive tactical aesthetics, and deadly downrange accuracy.