SIG Air x SIG Sauer ProForce M18 GBB Pistol in Desert Tan

If you're looking for a compact airsoft sidearm that walks and talks like the real deal, the SIG Air x SIG Sauer ProForce M18 is your go-to. This 1:1 scale replica of the U.S. Army’s compact P320 M18 sidearm delivers an impressively authentic shooting experience—right down to its full-metal slide, laser-etched trademarks, and clean, balanced handling. In classic desert tan, it fits in naturally with a modern loadout, whether you're skirmishing outdoors or running indoor CQB drills.

Just like its bigger M17 sibling, the M18 is optic-ready straight out of the box. The rear sight plate is easily removable, allowing quick mounting of micro red-dot or reflex optics. Combine that with the adjustable hop-up, and you’re getting pinpoint accuracy with BBs tracking just the way you want them to. Whether you're running short-range target transitions or stretching your sidearm’s reach, this compact airsoft pistol won’t let you down.

It comes powered by Green Gas as standard, giving you smooth, responsive blowback that mimics real recoil nicely. But if you want a snappier feel and increased cold-weather reliability, the M18 is also compatible with CO₂ magazines—handy for players who train year-round or want to squeeze more realism into their sessions. That blowback feels sharp and purposeful without being over the top, giving you solid shot-to-shot feedback for training or gameplay.

With an overall length of around 195 mm and weighing just under 0.7 kg with the magazine in, the M18 hits the sweet spot for a secondary weapon: light enough for fast draws and transitions, but with enough heft to feel purposeful in hand. The flush-fit 21-round magazine ensures you’re not reloading constantly, while still maintaining the pistol’s compact profile—ideal for holster carry or close-quarters movement.

Durability and realism are clearly front and centre in this build. The ProForce M18 is field-strippable, making maintenance straightforward and helping replicate real-world breakdown drills. Its reinforced polymer frame, coupled with a metal slide and internals, means this GBB pistol holds up well even under frequent use—exactly what you want from a training tool or backup airsoft gun.

Integrated iron sights flip up in case your optic fails mid-game, and the standard 20 mm Picatinny rail under the barrel lets you mount a torch, laser, or other low-profile accessories to suit your setup. With familiar controls and a layout that mirrors the real M18, this pistol offers excellent cross-training value—perfect for players who value authenticity in their kit.

Whether you’re using it as a reliable backup or your main sidearm, the SIG ProForce M18 is a standout compact option for anyone who values both function and form. And if you're browsing for other solid backup pieces, check out our full range of airsoft pistols.

Features

• True-scale 1:1 replica of the compact U.S. Army M18 pistol
• Metal slide with laser-etched SIG Sauer trademarks
• Green Gas powered (CO₂ mag compatible)
• Optic-ready slide with removable rear sight plate
• Adjustable hop-up for improved accuracy
• Smooth and realistic blowback action
• Flush-fit 21-round magazine
• Field-strippable design for easy maintenance

What you get

• SIG Air x SIG Sauer ProForce M18 GBB Pistol (Tan)
• 21-round gas magazine
• User manual
• Hop-up adjustment tool

Details

• Platform: SIG P320 M18 compact replica
• Construction: Metal slide, polymer lower
• Gas System: Green Gas standard, CO₂ compatible
• Magazine Capacity: 21 rounds
• Length: Approx. 195 mm; Weight: Approx. 0.68 kg