It comes packaged with the Modulus ECS-10; it can also be purchased separately.
The Dual-Rail Barrel features two tactical rails, one being on the bottom with the other resting on the top. The front muzzle part of the extension is also compatible with other barrel extensions, allowing the blaster to have multiple extensions equipped onto it. Theoretically, the user could have an infinite number of extensions attached to the blaster, but the more extensions are clipped on, the less accurate it will be. The barrel will start to wobble and bend, making the shot leave inaccurately and slower.
- Dual-Rail Barrel on the Amazon website
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