- The S&T M4 Slant Cut Keymod 13" Gas Blowback is exactly like that 9" except it's longer in length.
- It uses the WA gas blowback system this ensures reliable performance even with aftermarket parts. The rifle has an injection moulded polymer receiver allowing it to be lightweight.
- The SOPMOD stock is adjustable.
- The flat-top receiver features a 20mm rail to mount optics. The 20mm railed Keymod compatible handguard has Keymod mounting points on the 3, 6 and 9 O'Clock positions. Uses green gas. This rifle is quite similar to the M4 Slim Cut Keymod 9".
- WA Gas Blowback System
- Injection moulded polymer receiver
- The improved gas efficiency, reliable feeding and firing in full auto
- Adjustable SOPMOD type stock
- Flat top receiver is ideal for mounting optics or other 20mm accessories
- 20mm railed Keymod compatible handguard with Keymod mounting points on the 3 O'Clock, 6 O'Clock, and 9 O'Clock positions
- S&T M4 Slant Cut Keymod 13" Gas Blowback
- 50rd Magazine
S&T M4 KEYMOD 13" GBB BK