This super low profile adjustable internal hop-up will sit partially inside your outer barrel making it not visible with a muzzle on.*Notes*Recommended to secure the hop-up with a semi permanent glue like UHU.Do not push the hop-up too deep into the outer barrel. The 3D printed part should sit outsi..
If you don't like a visible hop up sitting inside your muzzle/silencer, then this is for you.The hop-up unit sits flush with the inner barrel with the same outer diameter of 9.5mm. This hop-up and inner barrel combo remains hidden inside your outer barrel giving you a realistic look to your blaster ..