On top you'll find a full-length 20mm Picatinny rail for optics

The inner diameter is 6

At the sign of any damage do not use

as well as a precise rotary Hop-Up chamber

- Replace the standard Hop-up Adjusting Wheel- Suitable for Tokyo Marui Hi-Capa 5

Monk Customs 7" Carbon Fiber Outer Barrel (Gloss Black) lancer On top you'll find aThe Monk outer barrels are build for super lightweight set ups! By using nylon and carbon fiber the 7 outer barrel is the most lightweight outer barrel on the market today. This outer barrel is compatible with the M4 series. . Deck out your custom gun today with the newest aftermarket accessories in the game! Let's Get It!