Blackviper B3803 M4 fully auto Airsoft gun in Clear

<

Blackviper B3803 M4 Fully Auto Airsoft Gun in Clear

Key Features
- 400 Round High-Cap Magazine 
- Solid Polymer Body + Polymer Gearbox Shell 
- Full Fixed Stock 
- Approx. 300 FPS 
- Fully Adjustable Hop-Up 
- Semi & Full Auto Firing Modes 

See the Gears. Feel the Performance. A Clear M4 That Actually Delivers.

Description.

The Blackviper B3803 M4 Fully Auto Airsoft Gun in Clear is one of those pieces that instantly grabs attention on the safe zone table. Not because it’s loud or flashy, but because you can literally see what’s going on inside it. The transparent receiver shows the inner workings – the mock bolt cycling, the motor engaging, the gearbox moving through its cycle. For newer players, that’s fascinating. For seasoned airsofters, it’s just plain satisfying.

This airsoft rifle is the brother to the well-known B3814, sharing the same internal setup and gearbox layout. So if you’ve handled that model before, you’ll already know what to expect here – consistent performance, reliable feeding, and a rate of fire that feels lively without being wild. It’s a proper entry-level electric rifle, but it doesn’t feel like a toy. Not even close.

Let’s walk through it from front to back, the way we all do when we pick up a new bit of kit.

At the front end, you’ve got a standard M4-style handguard in black polymer. It balances nicely against the clear upper and lower receiver, giving the whole build a sharp contrast. It’s 1:1 scale to a Colt M4/M16 platform, so dimensions and proportions feel right. Not oversized. Not cut down. Full-length and familiar in the hands.

The outer barrel is metal, which is good to see at this price point. It adds a bit of front-end weight and durability. Underneath it all sits a fully adjustable hop-up unit. That’s where this BB Gun really earns its keep. Dial it in properly and you’ll see a noticeable improvement in range and consistency. For a rifle shooting around 300 FPS, correct hop adjustment makes the difference between “that’ll do” and “actually impressive.”

Now, 300 FPS puts this airsoft gun in a sweet spot for UK skirmish sites and backyard target practice. It’s got enough punch for woodland and CQB use without pushing site limits. Pair that with semi and full auto firing modes, and you’ve got flexibility straight out of the box. Semi for controlled shots. Full auto when you need to lay down a bit of plastic persuasion.

The included 400 round high-cap magazine is generous, especially for newer players. Wind it up and you’re good to go for a solid stretch before needing to reload. For skirmish beginners, that means more time playing, less time fumbling with spare mags. And let’s be honest, when you’re just getting started in airsoft, that matters.

One thing people always ask about clear-body airsoft rifles is durability. Fair question. The B3803 uses a solid polymer body along with a polymer gearbox shell. Now, that might raise an eyebrow if you’re used to full metal builds, but this setup is designed to handle its rate of fire. It’s not fragile. It’s built for its intended use. As long as you’re not trying to push it with extreme upgrades or abuse it, it will do exactly what it’s meant to do – consistent, dependable shooting for entry-level and casual skirmishing.

The gearbox itself is the same layout used in its older sibling, which has already proven popular. It cycles smoothly, and with the supplied NiMH battery (which takes roughly 2–3 hours to charge), the trigger response is snappy enough for this category of Airsoft AEG. You’re not getting competition-level trigger speed. But you are getting a solid, reliable platform that fires cleanly and consistently.

Moving back to the receiver – and this is where it really stands out. The clear finish isn’t just a gimmick. It gives the rifle a distinctive look that separates it from the sea of standard black M4 platforms. On the field, it turns heads. In the garden, it looks striking. With the black stock, magazine, and handguard contrasting against the transparent body, it has a unique aesthetic that younger players especially tend to love.

Up top, you’ve got a removable carry handle complete with built-in rear sight. Old-school M4 vibes. Take it off and you can mount optics if you want to modernise the setup. Leave it on and you’ve got that classic silhouette. The iron sights are perfectly usable for close to mid-range engagement, especially once you’ve adjusted your hop properly.

Sling points? Yes. There’s one at the front and one at the rear of the full fixed stock. That means you can run a basic two-point sling without needing extra adapters. Small detail, but useful. Especially for younger players who might appreciate taking some weight off their arms during longer sessions.

The full stock houses the battery and balances the rifle well. It keeps the rear weight steady, so the whole airsoft rifle doesn’t feel front-heavy. For beginners, that balance makes a big difference. It feels stable. Predictable. Easy to shoulder and keep on target.

As a first airsoft gun, this makes a lot of sense. It’s approachable. It’s affordable. It performs well for its class. I’ve seen plenty of new players start with something similar and stick with it for a good while before feeling the need to upgrade. And for younger airsofters, the clear receiver adds that bit of visual excitement without compromising function.

This isn’t trying to compete with high-end, full-metal airsoft assault rifles. It’s not pretending to be something it’s not. It’s a dependable entry-level Airsoft AEG that gives you semi and full auto, adjustable hop-up, a generous high-cap magazine, and a distinctive look. For the price bracket, that’s solid value.

If you want something that stands out from the run-of-the-mill airsoft rifles on the market, this one does exactly that. Clear body. Classic M4 profile. Reliable performance. Simple as that.

Other Great Features are,

1:1 scale Colt M4/M16 platform 
Removable carry handle with integrated rear sight 
Front and rear sling attachment points 
Metal inner barrel for improved consistency 
Comfortable M4-style pistol grip 
Easy access battery compartment in full stock 

In the box:

- Blackviper B3803 M4 Clear Airsoft Gun
- 400 Round High-Cap Magazine
- NiMH Battery
- Charger

Specifications

Magazine: 400 Round High-Cap Mag
Measured Velocity: Approx. 300 FPS
Hop-Up: Fully Adjustable
Fire Mode: Semi / Full Auto
Body Material: Polymer (Clear Receiver)
Gearbox Shell: Polymer
Barrel Type: Metal Inner Barrel
Scale: 1:1 Full Size M4 / M16 Platform
Battery: NiMH (Approx. 2–3 Hour Charge Time)

Sku :

BV-3803-CL