Bolt B4 TSD BRSS Heavy Recoil Black Airsoft Rifle


Bolt B4 TSD BRSS Heavy Recoil Black Airsoft Rifle





The Bolt B4 TSD Airsoft Gun is based on the reliable M4A1 design, but with some modern updates, such as the new design High Density Polymer furniture.

This compact Airsoft Electric Gun is based on the much loved AR platform, and is built to a fantastic standard to create a highly robust, reliable and consistent airsoft replica.

The outer barrel assembly, suppressor, handguard, receiver, buffer tube and various trim aspects are made from a combination of Alloy, Aluminium and Steel, providing a realistic weight, and super realistic feel - especially when combined with the vicious BRSS Heavy recoil. Where Polymer has been used (pistol grip and stock) they have made sure to use a high density Nylon Fiber which is a tough, quality material that feels great in the hand.

The RIF is a rear-wired design, and uses a Mini Tamiya connector at the rear of the stock, making crane stock LiPo batteries the perfect choice. Due to the recoil system taking up most of the buffer tube, your battery space is in the side of the Crane Stock, offering plenty of room, hence it being best suited to a 7.4v Crane Stock LiPo. To access the battery compartment, simply squeeze the tabs at the rear of the stock to pop out the butt pad, remove the rear cover underneath, slide your battery in to the sides of the crane stock and connect your battery to the Tamiya connector.

The stock and buffer plate feature QD sling sockets for the easy addition of quick-release sling loops. The handguard and receiver are 20mm railed which allows you to attach a variety of accessories, to build your own personal, perfect AR platform rifle. Underneath the included Alloy-constructed suppressor is a 14mm CCW thread should you wish to install your own suppressors, tracer units and other muzzle devices.

The Bolt Recoil Shock System (or BRSS) is the game changer when it comes to why you should choose this AR above others. The BRSS system provides a heavy, weighted recoil when you pull the trigger. This gives the user a strong recoil effect without having to mess around with gas systems which can be unreliable. The replica features a reinforced Piston which actuates an ERG style recoil mechanism in the rear of the RIF, delivering a strong kick into your shoulder every time the replica cycles. This means you get to enjoy the feel of realistic recoil, with the benefits of high capacity magazines and consistent performance. Unlike traditional 'recoil systems' which simply move the dust cover back and forth, this style of recoil features a weighted piston moving backwards and forwards at the rear, which brings a whole new level of realism, and feels incredibly satisfying.

Included in the box is a 300rnd High Cap magazine made to the high standard we've come to expect from Bolt. Also included is a spare Mini Tamiya connector with wiring and extra pins, to help you either replace or extend the current wiring in the RIF if needed. One of our in-store technicians can do this for you if you're not confident in doing it yourself.

If you want a dashingly handsome, and compact AR platform replica, with an awesome, hard-kicking, mechanical recoil system for the ultimate realistic experience, then the Bolt B4 TSD is for you!


  • Bolt BRSS Heavy Recoil Shock Series
  • Compact AR Platform M4 Replica
  • TM Compatible
  • Steel Gears
  • 20mm Railed Handguard
  • 20mm Railed Receiver
  • 14mm CCW Thread
  • Rear Wired
  • Mini Tamiya Connector
  • Removable Rear Sight
  • Sliding Crane Stock
  • Rail Slot Markings
  • 300rnd High Cap Magazine Ibcluded
  • Tough Exterior Build Quality
  • Suppressor Included
  • Metal and Nylon Fiber Polymer construction
  • QD Sling Sockets
  • Fabric Patch Included
  • Hard Mechanical Recoil - BRSS

Package Includes:

  • 1 x Bolt B4 TSD BRSS Heavy Recoil AEG Airsoft Rifle
  • 1 x 300rnd High Cap Mag
  • 1 x Suppressor
  • Spare Wiring, Connector & Pins
  • 1 x Instruction Manual
  • 1 x Fabric Patch
  • 1 x Sticker

      To buy an airsoft weapon in the UK you must have a valid airsoft defence.

      This is not a licence, it is basically just proof that you intend to buy an airsoft weapon for use in airsoft.

      An airsoft defence could be a UKARA or membership with the British Airsoft Club, and various other forms of defence.

      You can only obtain an airsoft defence once you are over the age of 18.

      To get an airsoft defence the law is that you should play at least 3 games of airsoft, and that you must have been playing for at least two months.
      You can still buy an airsoft gun without a defence, provided you are 18 or older. If you choose to do this we would, by law, two tone (paint in a bright colour) parts of your chosen weapon. This is because an airsoft gun is considered a RIF aka Realistic Imitation Firearm, because they are so close to the real steel, whereas when you paint parts of it in a bright colour it becomes an IF aka Imitation Firearm. The reason being that the bright colours make it look less realistic to the public, and therefor less likely to be mistaken as real, were it to be used for any other purpose than airsoft.

      When you order a gun from us you will need to add your defence details in the comments section of the cart. If you do not have a defence you will need to write the colour that you wish to be used for two toning your airsoft weapon.

      Here is what's stated in the VCRA (Violent Crime Reduction) Act:

      For airsoft skirmishing, the Association of British Airsoft is putting in place arrangements to allow retailers to check that individual purchasers are members of a genuine skirmishing club or site. The key elements of these arrangements are:
      1. new players must play at least 3 (three) times in a period of not less than two months before being offered membership
      2. membership cards with a photograph and recognised format will be issued for production to retailers
      3. A central database will be set up for retailers to cross-check a purchaser’s details
      4. member’s entry on the database will be deleted if unused for 12 months.
      The defence for airsoft skirmishing can apply to individual players because their purchase of realistic imitation firearms for this purpose is considered part of the “holding” of a skirmishing event.
      Size Chart