E&C - M4 - Mk16 URGI 9.4 Electric Blow Back 16a1 Built-in Self-Test: this allows you

Built-in Self-Test: this allows you to quickly check whether the drop-in module is working properly

The Cybergun / WE M1A1 is comprised mostly of metal with imitation wood stocks that look quite real

So popular most other brands are made by BLS under their own brand

Magazine Catch

an invaluable feature for Airsofters who attend multiple sites with differing FPS levels

E&C - M4 - Mk16 URGI 9.4 Electric Blow Back 16a1 Built-in Self-Test: this allows youE&C Mk16 URGI 9. 4 Electric Blow Back E&C have brought to the airsoft world an electric blow back platform that has a working bolt system, similar in operation to the expensive TM EVOLT sytem but with the benefit of using standard AEG M4 magazines. This is a fully trademarked product with al the correct Colt Trademarks E Bolt System Electric Blowback AEG, Simulated bolt carrier movement E shooter Programmable MOSFET Steel bolt carrier, Steel gear set,