Guren 03-1 AEG Inner Barrel - 6.03MM - 303MM tac-41 rifle Change your Original M4A1 MWS

Change your Original M4A1 MWS HOP Arm and get stronger hop up

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Compatible model: Tokyo Marui GBB Hi-CAPA 5

When not in use

is the most advanced and highest capacity spring loaded AEG magazine ever produced

Guren 03-1 AEG Inner Barrel - 6.03MM - 303MM tac-41 rifle Change your Original M4A1 MWSGuren barrels are made of precise carbon steel & processed with HV500 coating. This plating reinforced the hardness of the surface. Its better than stainless steel (from HV200 to 400). Guren barrels have a single cut groove for AEG chambers and a crown cut at the end of the barrel. You can use this barrel with R hop patches bucking, the barrel cuts are squared to be 90 degree on the bottom. The window edges are cut at 45 degree to be gentle on the