Classic Army FN Herstal MK46 SPW AEG Airsoft Rifle with Adjustable Crane Stock in Black

If you're after raw firepower with elite special operations style, the Classic Army MK46 SPW AEG is your answer. This officially licensed FN Herstal replica brings the iconic belt-fed machine gun into the airsoft world with outstanding realism, serious performance, and a build quality that screams “battle ready.” Built to replicate the MK46 MOD 0 Special Purpose Weapon used by U.S. SOCOM, this airsoft gun isn’t just for show — it’s a skirmish powerhouse that eats up BBs and chews through cover fire roles like a pro.

On the outside, you’re getting the full metal treatment — the receiver, outer barrel, rail system, bipod, and buffer tube are all metal, giving it that authentic weight and rock-solid durability you want in a support weapon. The iconic fluted barrel is paired with 30 inches of rail space across the handguard and receiver, making it ideal for mounting scopes, grips, PEQ boxes, and whatever else you need for your mission profile. Adjustable low-profile iron sights are included front and rear, offering solid sighting if you're running it optics-free.

The MK46 SPW comes with an adjustable crane stock to help balance the weight and get a more comfortable shoulder weld. This is especially important on a 5.9kg (unloaded) machine gun — whether you’re posted up in a fire support position or advancing with your squad, the adjustable stock keeps things manageable. It’s fitted with a textured pistol grip and steel folding bipod for enhanced firing stability when prone or braced.

Internally, Classic Army continues the heavy-duty theme with a reinforced Version 2-compatible gearbox running 8mm steel bearings for smooth, consistent rotation. The gearbox is fully metal, with quality internals including a metal-toothed piston designed to take the strain of extended full-auto use. Out of the box, you’re looking at an average of 380 FPS on 0.20g BBs — with some reaching up to 440 FPS — making it a beast for outdoor suppression and defensive roles.

It feeds from a 300-round high-capacity M4 magazine as standard, but here’s where it gets interesting — it’s also compatible with most standard M4 mags and can take M249 box mags (like the 1200-round auto-winding drum, sold separately). This flexibility means you can run your existing mags or go full LMG loadout with minimal hassle. Pair it with a box mag and you’ve got the ultimate sustained fire platform to lock down lanes or support flanking manoeuvres.

It’s 11.1v LiPo ready too, which means if you want a blinding rate of fire, just drop in a suitable battery (Small Tamiya connector) and you’re good to go. The adjustable hop-up lets you tune your BB flight for better reach and tighter groupings, and the 363mm inner barrel provides a nice blend of compactness and accuracy.

This isn’t a casual plinker — it’s a support gun that demands a bit of muscle and rewards you with control of the battlefield. If you’re up for the challenge, the Classic Army MK46 SPW will have you laying down walls of plastic like a proper squad gunner. And don’t forget — if you see it cheaper anywhere else, send it our way via the price match page and we’ll beat it, so you get more bang for your buck (literally).

Features

• 30 inches of combined rail space 
• Full metal receiver and outer barrel
• 8mm Advanced bearing gearbox (Version 2 Compatible)
• Integrated metal rail system
• Adjustable metal bipod
• Adjustable front and rear iron sights
• Textured pistol grip
• Compatible with M249 box mags
• Adjustable Crane Stock
• Takes standard M4 mags
• Scope mount base rail and RAS
• Stamped steel receiver with licensed FN Herstal markings
• Mk46 fluted barrel

What you get

• Classic Army MK46 SPW Airsoft Machine Gun 
• 300-Round High-Capacity Magazine
• Cleaning Rod
• Instruction Manual

Details

• Operation: Electric / Automatic
• Build: Full Metal (Receiver, Outer Barrel, Rails, Flash Hider, Bipod, Buffer Tube)
• Fire Modes: Full-Auto with Functional Safety
• Muzzle Velocity: 350–440 FPS with 0.20g BBs (Average 380 FPS)
• Gearbox: Full Metal with 8mm Bearings
• Magazine: 300rd M4 High-Cap (gear wind-up)
• Battery: 8.4V Nunchuck or 11.1V LiPo (not included)
• Hop-Up: Adjustable
• Weight: 5.9kg (unloaded)
• Model Number: CA037M
• Length: 880mm / 970mm (Retracted / Extended)
• Battery Connector: Small Tamiya
• Inner Barrel Length: 363mm
• Outer Barrel Threading: 14mm Clockwise
• Colour: Black