Maple Leaf Inner Barrel

Yes, this barrel is specifically designed for 5.1 Hi-Capa platforms. At 113mm, it is the standard length for these models, so it should drop in without requiring modifications.

The 6.02mm bore is a 'tight-bore' design that reduces the air gap between the BB and the barrel wall. This minimizes air leakage around the projectile, which helps stabilize your shots and improves overall accuracy compared to standard stock barrels.

You may see a slight increase in FPS because the tighter bore creates a better air seal. However, the primary goal of this upgrade is shot consistency and grouping rather than a significant power boost.

Yes, it is highly recommended. Because the tolerance is tighter, lower-quality or inconsistent BBs are more likely to jam or cause feeding issues. Stick to high-grade, polished BBs to get the best performance and avoid damage.

This barrel is designed to work with standard Tokyo Marui-spec Hi-Capa hop-up units. If you are using an aftermarket or proprietary hop-up system, you should verify that it accepts standard VSR-cut or GBB-cut barrels before purchasing.