Madbull Python Barrel

The 6.03mm diameter is tighter than standard stock barrels, which reduces the air gap around the BB as it travels. This creates more consistent air pressure behind the projectile, resulting in tighter shot groupings and improved accuracy at range.

Yes, because of the tighter 6.03mm tolerance, you must use high-quality, polished BBs. Low-grade or inconsistent ammunition is prone to jamming in tight-bore barrels, which can damage the internal surface.

This barrel is designed for full-length M16 platforms. Before purchasing, measure your current inner barrel to ensure it matches the 509mm length, as some 'M16' models use shorter barrels depending on the specific handguard or outer barrel configuration.

The hard-coating creates a smoother, more durable internal surface that resists wear from friction. This helps maintain consistent performance over time compared to standard brass or aluminum barrels that may oxidize or scratch more easily.

You may see a slight increase in muzzle velocity because the tighter bore creates a better air seal, allowing more energy to transfer to the BB. However, this upgrade is primarily intended for precision and grouping rather than significant power gains.