BOLT B4A1 Elite SD

  • Unique Furniture
  • Mechanical Recoil
  • Sturdy External Build

A well-built and extremely tough replica of an AR platform rifle which has unique Polymer furniture as well as a strong mechanical recoil which will kick your shoulder each time you fire the replica.

Full description


This electric-powered Airsoft Gun is based on the traditional M4A1 design, however with updates in the form of modern Polymer furniture and an AAC style flash hider. The outer barrel assembly, receiver, buffer tube, sling plate and various trim aspects are made from a combination of Alloy, Aluminium and Steel for a long lasting finish which provides a realistic weight, feeling extra-incredible when combined with the vicious recoil. Where Polymer has been used (pistol grip, handguard and stock) they are a high density Nylon Fiber which is a tough, quality material that feels great to the touch.

The RIF is a front-wired design which features a Mini-Tamiya connector in the handguard and is perfect for a 7.4v LiPo Crane battery. To access the battery compartment you need to pull back on the D-Ring and separate the two halves of the handguard. The stock features a QD sling socket for the addition of quick-release sling loops, and the ambidextrous sling plate allows you to attach slings from either side of the replica. The receiver has a 20mm rail which allows you to attach all manner of sights, scopes and accessories. Underneath the Alloy-constructed flash hider is a 14mm CCW thread should you wish to install your own suppressors, tracer units and other muzzle devices. The flash hider is compatible with quick-release AAC style suppressors should you wish to add one.

The Bolt Recoil Shock System (or BRSS) is the beating heart of what makes these replicas awesome, and 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 joy of realistic recoil, with the benefits of high capacity magazines and consistent performance. Unlike traditional 'recoil systems' which simply move the dust cover backwards and forwards, this style of recoil involves a weighted piston moving around at the rear, which brings a whole new level of realism, and feels incredibly satisfying.

Included in the box is a 120rnd Mid Cap magazine made from Polymer, and an attractive Alloy stock release button which can be installed to help you remove the entire stock assembly.

If you want a traditional M4A1 platform electric rifle which features a modern, updated design as well as a strong mechanical blowback which will punch your shoulder with every shot, then the Bolt B4A1 Elite SD is a great choice.


  • Bolt Recoil Shock Series
  • M4A1 Platform Replica
  • Full-Length AR Platform
  • TM Compatible
  • Steel Gears
  • Polymer Handguard
  • 20mm Railed Receiver
  • 14mm CCW Thread
  • Front Wired / Mini Tamiya
  • Removable Rear Sight
  • Unique Sliding Stock
  • Rail Slot Markings
  • 120rnd Mid Cap Magazine
  • Tough Exterior Build Quality
  • AAC Style Flash Hider
  • Nylon Fiber Polymers
  • Ambidextrous Sling Plate
  • Fabric Patch Included
  • Hard Mechanical Recoil

Package Includes:

  • Bolt B4A1 Elite SD
  • 120rnd Mid Cap Mag
  • Stock Removal Lever
  • Instruction Manual
  • Fabric Patch
  • Sticker



Weapon Construction External
Weapon Type
Assault Rifle
Over 18 Only Icon
Over 18
Icon UKARA - United Kingdom Airsoft Retailer Association
Defence / UKARA Required
Yes, No,
FPS Icon
FPS (Feet Per Second), using 0.20g BB
Approx. 320fps ± 10%, using 0.20g BB
Site Legal Icon
Site Legal, using 0.20g BB
Included Items
  • Magazine
  • Instruction Manual
  • Fabric Patch
  • Sticker
Skill Level Icon
User Skill Level
Regular Player, Experienced Player,

Weight and Dimension

Weight KG Icon
Weight (KG)
Approx. 2.75kg
Weapon Length Collapsed
Length (Collapsed)
Weapon Length Extended
Length (Extended)


Colour Wheel Greyscale
Primary Colour
Black, Tan ,
Colour Wheel Greyscale
Secondary Colour
Construction Icon
Alloy outer barrel assembly, handguard, carry handle, receiver, buffer tube, sights and trim. Polymer pistol grip & stock.
Weapon Construction External
External Construction
Gearbox Icon
Internal Construction

Weapon Specific

Power Source Icon
Powered By
Blowback Icon
Electro Mechanical Blowback
Weapon Platform
AR Platform, M4 / AR15 / M16,
Magazine Style Icon
Magazine Style
STANAG, AR Platform,
Fire Select Icon
Fire Selector
PatrolBase | Fire Select Safe
Patrol Base | Fire Select - Semi Automatic
Semi Automatic
Patrol Base | Full Automatic
Full Automatic
Weapon Safety Features Icon
Safety Features
Trigger Lock
Shooter Configuration Icon
Shooter Configuration
Right Handed
Weapon Configuration Icon
Weapon Configuration
Weapon Scale Icon
Weapon Scale
Suggested BB Weight


Hop-Up Unit Icon
Hop-Up Unit
Hop-Up Unit Adjuster Icon
Hop-Up Adjuster
Hop-Up Unit Location Icon
Hop-Up Location
Adjustable behind dust cover


Weapon Furniture Icon
  • Railed Receiver
  • Sliding Stock
  • AAC Style Flash Hider
  • Ambidextrous Sling Plate
Rail System Icon
Rail System
20mm RIS / RAS
Icon Stock Positions
Stock Setting
Sight Type Icon
Sight Type
Iron Sights
Sling Plate Icon
Sling Options
Buffer Plate


Icon Thread Type
Outer Barrel Thread Type
Icon Thread Direction
Outer Barrel Thread Direction
CCW (Counter Clockwise)
Outer Barrel Thread Size

Magazine Specific

Magazine Type
Medium Capacity , AEG,
Magazine BB Capacity
Approx. 120 Rounds
Magazine BB Fill Method
Fill Window
Magazine BB Fill Location

Electric Gun Specific Information

Wiring Icon
Gearbox Wiring
Front Wired
Battery Specific
Battery Connector
Patrol Base | Icon | Mini Tamiya
Mini Tamiya
Suggested Battery
Suggested Battery Type
Suggested Battery Configuration
Suggested Battery Voltage

Product Testing Data

Notepad Icon
Test Description
Notepad Icon
Tested Using
ASG Blaster 0.20g BBs
Notepad Icon
Test Date

Detailed Power Tests

FPS, using 0.20g BB
Approx. 320fps, using 0.20g BB

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