Specna Arms - SA-B12 8" Key Mod SAEC

Fubar Bundy Airsoft SKU: SAB12


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New in from Specna Arms is this SA-B12 8" KeyMod Rail M4 with SAEC system.

This model features a 8” modular, KeyMod handguard. The KeyMod module can be expanded upon with dedicated segments, for instance, RIS rails (KeyMod nuts) in any position or configuration due to holes around the handguard (KeyMod slots)  its also fitted with a Crane Style Stock and a Marine traded marked metal body.

The gearbox is rewired and is the new SAEC system which means the main Spring can be changed in a matter of seconds by simply removing the stock and buffer tube this then gives access to the rear of the V2 style gear box.

Two Spring are included with the AEG one that will give 410 ideal if going DMR and locking to Semi (Gate Warfet is ideal for this) and a more friendly Spring that gives around the 320 mark. The beauty of the SAEC system is it takes less than 30 seconds to change the spring.

The gearbox has a bearing piston head holds a steel spring guide, which is a part of Enter & Cover™ system and 8mm ball bearings mounted steel gears. The system is safeguarded by four anti-reversal latches. A lightweight, polycarbonate piston was equipped with steel tooth in order to increase its durability, a type 2 cylinder, steel circuit breaker and metal hop-up chamber. This is one strong gearbox.

All a lot of AEG from the new kid on the block Specna Arms.


  • Material: Zinc Alloy + Steel + Polymer
  • Length: 700 – 785mm
  • Weight: 2370g
  • Colour: Black
  • Muzzle Velocity: ~410 / ~310 FPS
  • Engine: Electric
  • SAEC  Fast Spring Release System
  • Manufacturer: Specna Arms