Gunfire Poland has in stock a WE M4 CQB Gas Blowback Rifle equipped with the RA-Tech NPAS System. This comes with a CO2 magazine with wich you can load a C02 capsule in the magazine to power up the rifle. The NPAS system is a fully adjustable valve opening so you can increase or decrease the power of the rifle in accordance with skirmish site rules.

The replica is equipped with an Operating Bolt Catch and while this comes with a CO2 magazine, you can use the standard WE M4 gas magazines if you prefer using green gas during games. Out of the box you can adjust power from 290-480fps on CO2. Price is €565.33.