Blackviper B3812 M4 CQB Full Auto Airsoft Rifle with Navy Stock in Clear

Blackviper B3812 M4 CQB Full Auto Airsoft Rifle with Navy Stock in Clear

The Blackviper B3812 M4 CQB is a cracking little airsoft rifle for those just starting out, or anyone after a budget-friendly blaster that delivers fast-paced fun straight out of the box. Designed as the younger sibling of the popular B3814, this version shares the same gearbox and internals, giving it solid performance with a slightly leaner footprint and a slick clear body paired with a navy-style full stock.

This airsoft rifle features a robust polymer build throughout, including the gearbox shell. Now, before you raise an eyebrow at the plastic gearbox, hear this—it’s set up smart. The internals are arranged to handle the full-auto firing mode without chewing themselves up. And judging by its surprising durability and performance, it does the job well. Whether you're hammering rounds downrange in the garden or running some indoor CQB drills, this rifle won't buckle under pressure.

The B3812 comes equipped with a metal barrel for added accuracy, an adjustable hop-up system, and a whopping 400-round high-capacity magazine. That means less time reloading, more time sending BBs flying. With a muzzle velocity of around 300 FPS, it’s nicely balanced for indoor arenas or backyard play—strong enough to feel punchy but not too hot for close-quarters use.

One of the standout features is its adjustable navy-style full stock. It adds a level of comfort and usability for players of all sizes. Whether you’ve got long arms or short reach, this thing adjusts to fit like a glove. The full stock also offers plenty of battery storage space, housing the included NiMH battery that gives solid runtime with a 2–3 hour charge cycle.

Let’s talk rate of fire—because this thing spits BBs like it’s got something to prove. It’s genuinely impressive for the price point. You won’t find many airsoft AEGs in this budget bracket that can put out rounds this quickly and reliably. It may not be high-end, but for practice, target shooting, or introducing friends to the hobby, it’s an absolute blast.

The top rail allows you to throw on optics or accessories if you want to upgrade your setup down the line, and we also stock spare mags if you want to extend your time in the field. And being a clear-body gun, it doesn't require a UKARA membership to purchase—easy access for new players looking to dive straight in.

In a nutshell, the Blackviper B3812 M4 CQB rifle delivers more than expected for the price. It's quick, fun, and comfortable to use—an excellent starter AEG that’s just as good for plinking as it is for basic training and casual CQB skirmishes.

Highlights

• 400-round high-capacity magazine for extended firing
• Polymer body with reinforced plastic gearbox shell
• Full navy-style adjustable stock for comfort and battery space
• Approximately 300 FPS velocity—CQB ready
• Fully adjustable hop-up for better accuracy
• Full-auto and semi-auto firing modes
• Clear body for easy visibility and UKARA-free ownership
• Metal barrel enhances shooting precision

What's Included

• Blackviper B3812 M4 CQB Airsoft Rifle (Clear/Navy)
• 400-Round High-Capacity Magazine
• NiMH Battery
• Basic Charger
• Sample BBs

Technical Specifications

• Magazine Capacity: 400 rounds
• Measured Velocity: Approx. 300 FPS
• Fire Modes: Semi and Full Auto
• Hop-Up: Fully Adjustable
• Body Material: Polymer
• Barrel: Metal
• Power Source: NiMH battery (2–3 hour charge time)
• Stock: Navy-style full stock (adjustable)
• Clear two-tone design (no UKARA required)