Galaxy G51 M&P Big Bird Metal Spring Pistol in Radioactive Green

The Galaxy G51 M&P Big Bird is a full-scale, full-metal pistols replica that gives you the look and feel of a service pistol without the running costs or complexity of gas systems. Built around a solid metal slide and frame with textured polymer-style grips, this spring-powered airsoft pistol is aimed squarely at backyard plinking and target practice — not skirmishing — and offers an authentic heft and handling for a very reasonable price.

Out of the box the G51 feels substantial: it weighs in at roughly 480g, measures about 190mm long and accepts a 15-round magazine. The package includes a lower rail so you can mount a torch or tiny laser if you want to sharpen up target acquisition. Because it’s spring powered you cock the slide before each shot, which keeps the internals simple and extremely tolerant of casual use. That simplicity makes it economical to run and easy to maintain for beginners.

Design cues come from the Smith & Wesson M&P family — the ergonomic grip shape, broad trigger guard and overall silhouette are familiar to anyone who’s handled modern service pistols. The Galaxy G51 captures that ergonomics-first approach with a pistol that’s comfortable for most hand sizes and easy to index for quick follow-up shots. Fixed front and rear iron sights sit atop the slide and are easy to pick up for close to mid-range backyard shooting.

Performance is in the 200–250fps bracket with 0.12g BBs, making the G51 a low-powered, friendly option for supervised garden play and basic marksmanship training. You can also shoot 0.20g pellets for a steadier flight, but the gun is happiest at lighter weights for plinking. The fixed hop-up helps stabilise trajectories and the metal inner barrel improves consistency compared with cheaper plastic barrels.

The 15-round magazine is straightforward and reliable; it seats with a positive click and releases cleanly when you press the mag release. The lower accessory rail is a useful addition — clip on the included small torch or a micro laser and you’ve got quicker target acquisition in subdued light or just a bit more fun when showing the kit to mates. Spare mags are available if you want to keep the action going without reloading downtime.

Because it’s a springer, the G51 is incredibly tolerant: no gas seals to fail, no batteries to charge and fewer small moving parts to break. That durability makes it a good first pistol for new players learning trigger control and safe handling, or for collectors who want a realistic metal replica they can actually use. While not suitable for serious skirmish use, it’s a dependable, low-maintenance backyard shooter that looks and feels the part.

If you want an uncomplicated, full-metal M&P-style airsoft pistol with realistic ergonomics, a handy lower rail and a 15-round capacity, the Galaxy G51 Big Bird is an excellent budget option. It’s built to be used: simple single-shot operation, metal construction, realistic weight and a friendly power band make it a solid choice for casual shooting, training basics and display.

Features

• Full metal slide and frame for realistic weight and durability 
• Approx. 200–250 fps with 0.12g BBs
• Spring powered — no gas or batteries required
• Full 1:1 scale M&P-style ergonomics
• 15-round removable magazine
• Lower accessory rail included for torch/laser
• Fixed front and rear iron sights
• Economical and low-maintenance for beginners

What you get

• Galaxy G51 spring pistol 
• One 15-round magazine
• Sample pack of BBs
• Lower rail fitted

Details

• Manufacturer: Galaxy
• Model: G51 (M&P style) in Radioactive Green
• FPS: Approx. 200–250 (0.12g)
• Magazine Capacity: 15 rounds
• Weight: Approx. 480g; Length: Approx. 190mm
• Materials: Metal slide/frame, plastic trigger/grip panels
• Power Source: Spring (manual cock per shot)
• Hop-up: Fixed; Uses 6mm BBs (0.12g or 0.20g)