Guarder 6.02 inner Barrel with Chamber Set for Tokyo Marui G17 Gen 5 MOS GBB (G19/45 Barrel Spec)

Currently out of stock across all retailers.

Prices last checked July 29, 2026 across 2 retailers.

For the airsoft marksman looking to extract every ounce of performance from their sidearm, the upgrade path often begins with the heart of the weapon: the hop-up system. The Guarder 6.02 Inner Barrel with Chamber Set, specifically designed for the Tokyo Marui G17 Gen 5 MOS, represents a comprehensive solution that marries precision engineering with robust construction. This is not merely a replacement part; it is a complete overhaul of the pistol?s ballistic foundation, crafted to transform a standard Gas Blowback (GBB) pistol into a field-dominant tool. At the core of this set lies a high-grade precision inner barrel, machined from durable copper to an exacting 6.02-millimeter diameter. This specific bore size is the sweet spot for airsoft performance; it is tight enough to provide superior gas efficiency and a significant boost in muzzle velocity, yet it offers the necessary tolerance to prevent jamming with standard 6mm BBs. The copper construction ensures consistent thermal conductivity and a perfectly smooth internal surface, allowing each BB to travel down the barrel with minimal friction and maximum stability, resulting in tighter groupings and extended effective range. While the set is marketed for the popular G17 Gen 5 MOS, Guarder has engineered this system to accommodate the G19 and G45 barrel specifications, offering versatility for owners of these compact and crossover platforms. Complementing the barrel is a precision-machined aluminum hop-up chamber. Unlike the standard polymer chambers, this aluminum unit provides a rock-solid housing that eliminates flex under stress. This rigidity ensures that the hop-up adjustment remains consistent shot after shot, providing the shooter with reliable backspin application regardless of the pressure applied to the trigger. To complete the system, Guarder includes a 70-degree rubber hop-up bucking. This medium-hardness rubber is ideally suited for the increased air pressure generated by the tightbore barrel, providi

Guarder 6.02 inner Barrel with Chamber Set for Tokyo Marui G17 Gen 5 MOS GBB (G19/45 Barrel Spec) price comparison: the lowest price is $48.39 at eHobby Asia, the highest is $50.99, and the median across 2 tracked listings is $49.69. Comparing retailers can save up to 5% ($2.60) versus the highest-priced listing.

Compatible with: Glock

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