Two rail. I've shot 18s with rifle gasoline like how clean and accurate These are. I can set more money into overall performance pieces then clone right elements just like a ops brake and collar that I don't have a can for. But don’t fail to remember, Aero also has https://collinjxasi.blogoxo.com/29652457/new-step-by-step-map-for-knights-armament-m4-quad-rail