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  • Blackviper B3812 Electric Rifle With Navy Adjustable Stock in Blue
  • Blackviper B3812 Electric Rifle With Navy Adjustable Stock in Back

Blackviper B3812 M4 CQB Full Auto With Navy Stock in Blue

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£59.99 £89.99
(You save £30.00)

The sales of this item has been restricted to adults only. There is no minimum age requirement by law to use this item, however adult supervision is recommended at all times.

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Blackviper B3812 - M4 CQB IN BLUE 


- 400 Round High-Cap Magazine
- Solid polymer Body + Gearbox Shell
- Full Stock
- 300 Fps 
- Adjustable Hop-Up

This is Brand New from blackviper and the brother gun of the incredible B3814 This gun has the same specs and gearbox ect of its older brother and we expect this model to sell fast.
this is fantastic entry level CQB practice gun with a surprisingly high shot power and rate of fire,

This BB Gun DOES have a plastic shelled gearbox, but this is set up in such a way that it can withstand the ROF, and will not break down on you for no reason.

This is a fantastic weapon to begin airsoft on and comes with an adjustable navy stock to fit users of most sizes. 

This weapon has an incredible rate of fire for such a cheap price and as normall with the blackviper range of bbguns it offers great value for money.  

(This gun uses a NIMH battery, with a charge time of 2/3 Hours)

we also sell replacement mags for this gun here


Magazine: 400 Round High-Cap Mag
Measured velocity:  300 fps
Hop-Up: Fully Adjustable
Fire mode: Semi/Auto
Body material: Polymer 
Barrel Type: Metal 

Sku :


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Here is a collection of articles to help give you an informed decision to help you buy the best electric rifle that suits your needs. this advice is not specific for this gun but electric rifles in genral.

Product Reviews

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  1. Good customer service 5 Star Review

    Posted by Mart on 16th May 2019

    I was pleased that a problem I had was delt with the company who sorted things out to my satisfaction

  2. Does the job 5 Star Review

    Posted by Mart on 22nd Apr 2019

    I ordered this to humanly evict to pigeons from my solar panels as I do not participate in airsoft actions.

    After a few days of harassing the Featherd rats they seem to be getting the message, and I have to be honest I have had a certain pleasure taking pot shots at them but without doing them any harm,

    My son has an eye on the gun now as some of his friends partake in airsoft battles so it looks like a win win

  3. crazy good 5 Star Review

    Posted by harry beach on 22nd Oct 2018

    cool gun this website

  4. Fantastic Gun for the money 5 Star Review

    Posted by Unknown on 6th Apr 2018

    Purchased this gun for my son as his first AEG, performs fantastically, powerful, accurate, no issues at all. Makes a great noise too on full auto. Highly recommend this gun for people like us on a budget, you wont be disappointed and it received some high praise from the regulars at our local airsoft venue who use much much more expensive weaponry. Certainly not a cheap plastic replica, battery latest all day with 100's of rounds fired from it.

Delivery Prices start from just £2.50 with free delivery on orders over £50 To the uk mainland *.

Tip - The easiest way to check the shipping cost for what you want to buy is put all of the stuff you want in to your basket. Then in your basket under the sub total there is a link for Estimate Shipping & Tax” click this and fill in the details and it will tell you the shipping cost and if you qualify for free shipping


Free Shipping

Free shipping on orders over £50 UK mainland

Free shipping on orders over £100 Northern Ireland and highlands and islands & I.O.M

Free shipping on orders over £200 if you want delivery to Channel Islands

Free shipping is a 5 working day service (if you order Monday you get it the next Monday)


Delivery price (mainland uk) 

Royal Mail From  (depending on weight)  (2 days)           £2.50 
Yodel  (tracked) (post as much as you want) (3 days)   £4.75 
Express shipping (1 to 2 Days Delivery)                £5.95


Delivery price (Highlands and islands)

Northern ireland £ 7.95
Highlands and islands  £ 7.50
I.O.M £7.95
Channel Islands £ 14.95


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