Laylax Nine Ball Tight Bore Inner Barrel for SIG Sauer ProForce M17 MHS Airsoft GBB Pistol (Model: 6.03mm / 105mm)

Laylax Nine Ball 6.03mm Tight Bore Inner Barrel

For SIG Sauer ProForce M17 MHS Airsoft GBB Pistols (105mm)

Quick Specs

• Brand: Laylax / Nine Ball

• Barrel Diameter: 6.03mm

• Length: 105mm

• Material: Stainless Steel

• Compatibility: SIG Sauer ProForce M17 MHS Airsoft GBB

• Upgrade Type: Accuracy & consistency enhancement

Overview

The Laylax Nine Ball 6.03mm Tight Bore Inner Barrel is a premium performance upgrade designed specifically for the SIG Sauer ProForce M17 MHS gas blowback pistol. Known for exceptional machining quality and real-world performance gains, Nine Ball inner barrels are trusted by competitive players and serious airsoft enthusiasts worldwide. If you’re looking to tighten your groupings, improve consistency, and maximize the efficiency of your M17, this barrel delivers measurable results without compromising reliability.

Precision Engineering for Improved Accuracy

Manufactured from high-quality stainless steel, this inner barrel is built to exacting tolerances for consistent BB flight and improved shot stability. The 6.03mm tight bore diameter reduces internal air loss and limits BB wobble as it travels down the barrel. This translates into tighter groupings, better accuracy at range, and more predictable shot placement—especially noticeable during rapid follow-up shots.

Unlike ultra-tight bores that can be finicky in real-world conditions, the 6.03mm bore offers an ideal balance between performance and dependability, making it suitable for both indoor CQB and outdoor field play.

Precision Cut & Crowned for Consistency

Every Nine Ball inner barrel is precision cut and carefully crowned, ensuring BBs exit the barrel cleanly and evenly. The crowned muzzle reduces turbulence at the point of exit, helping maintain stability and accuracy downrange. This attention to detail is a major reason Nine Ball barrels consistently outperform stock barrels found in most factory pistols.

At 105mm in length, this barrel is perfectly matched to the SIG Sauer ProForce M17 platform, delivering optimal performance without unnecessary air loss or inefficiency.

Durable, Corrosion-Resistant Construction

The stainless steel construction offers excellent resistance to wear and corrosion, even under heavy use. Gas blowback pistols are exposed to moisture from propellant gases and environmental conditions, which can degrade lower-quality barrels over time. This Nine Ball barrel maintains a smooth internal surface for long-term performance and easy maintenance, ensuring your pistol stays accurate game after game.

Drop-In Upgrade with Trusted Compatibility

Designed as a direct-fit upgrade, this inner barrel installs cleanly into the ProForce M17 with no modification required. It pairs exceptionally well with upgraded hop-up rubbers and high-quality BBs, allowing you to fully unlock the performance potential of your pistol.

Nine Ball is widely regarded as one of the highest-quality aftermarket airsoft parts manufacturers in the industry, and this barrel reflects that reputation. Originally developed for top-tier platforms such as Tokyo Marui pistols, the same precision standards are applied here—resulting in a noticeable upgrade over the factory barrel.

Ideal For

• Players seeking tighter shot groupings

• Competitive and realism-focused builds

• Upgrading stock ProForce M17 performance

• Reliable accuracy improvements without sacrificing consistency

Why Choose Nine Ball?

• Premium stainless steel construction

• Proven accuracy improvements

• Precision machining and crowned muzzle

• Trusted Japanese aftermarket brand

Upgrade your sidearm with confidence and experience the accuracy difference with the Laylax Nine Ball 6.03mm Tight Bore Inner Barrel for the SIG Sauer ProForce M17.