The S&T RIS CQB Gas Blowback uses the WA gas blowback system this ensures reliable performance even with after market parts. The rifle has a injection molded polymer receiver allowing it to be light weight. The stock is adjustable. The flat top receiver features a 20mm rail to mount optics. The CQB-R style aluminum handguard also has a 20mm rail to allow for accessories.
WA Gas Blowback System
Injection molded polymer receiver
Improved gas efficiency, reliable feeding and firing in full auto
Adjustable LE type stock
Flat top receiver is ideal for mounting optics or other 20mm accessories
20mm railed CQB-R style aluminum handguard allows for easy integration of accessories
S&T M4 RIS CQB Gas Blowback