Laylax Nine Ball Inner Barrel

No, this specific barrel is precision-engineered exclusively for the SIG Sauer ProForce P320 M17 MHS GBB pistol. It will not fit other models due to the specific length and hop-up cut requirements.

The 6.03mm tight-bore diameter reduces the air gap between the BB and the barrel wall as the projectile travels through. This creates a more consistent air seal, which typically results in improved shot-to-shot accuracy and slightly higher muzzle velocity compared to standard stock barrels.

Installing an inner barrel is generally straightforward if you are comfortable field-stripping your pistol. You will need to remove the slide, take out the hop-up unit, and swap the barrels, but we recommend having a basic set of tools and following a disassembly guide for your specific P320 model to avoid damaging the hop-up rubber.

Stainless steel is highly durable and corrosion-resistant, making it low-maintenance compared to brass or aluminum alternatives. You should still periodically clean the inside of the barrel with a soft cloth and a small amount of silicone-free lubricant to remove debris and ensure consistent accuracy.

You may see a slight increase in muzzle velocity because the tighter bore creates a more efficient air seal. However, the primary goal of this upgrade is to improve grouping and consistency rather than significantly boosting power.