MM Compensator Fit Guide: Harrier, Seagull and Firefly Compared
Match MM compensators to Harrier, Seagull and Firefly configurations using barrel length, body dimensions and BCAR clearance before ordering muzzle parts.
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The MM Firefly Forend Sleeve is a 3D printed sleeve that wraps around the Firefly's pump grip, adding a more comfortable, textured surface to hold onto during every pump stroke. Monkee Mods designed the shape to echo the feel of a familiar handguard, so if you've used a similarly textured grip on another platform, the sleeve should feel immediately recognisable in the hand while noticeably improving the ergonomics of priming the Firefly.
Installation is straightforward: it comes with 4x M3*10 screws, and you just line up the sleeve's holes with the existing holes on the pump grip and drive the screws in — slowly, so you don't strip the screw heads or the pump grip threads. It ships in Black and Orange, and Monkee Mods will also do custom colour prints on request if you contact them directly.