1x Muzzle Brake

The inner diameter is 6

Power Source: Spring

use in many special forces and police units

Prometheus Fast Cycle EG Hard Gear 13:1

HK Army LTS Rifle Mag Cell (7-Cell) hydration pack 1x Muzzle BrakeThe Hostile series Mag Cells are designed to securely hold rifle magazines without the need of a top cover strap. The Mag Cell utilizes elastic tension to securely hold magazines in place without ever having to worry about losing a magazine in game play. The holsters are completely modular and able to be positioned vertically, horizontally or diagonally. Each holster can be quickly attached to your chest rig, harness, backpack or any item with Velcro