Maple Leaf 6.02mm 123mm Nickel-Plated Brass Inner Barrel for G17/18, Desert Warrior, Hi-Capa 4.3, P226, Silver

Most GBB pistols come with a factory inner barrel that's good enough for close range, but accuracy falls off fast past 80 feet. The Maple Leaf 6.02mm barrel is the upgrade you install when you want tighter groupings without swapping the whole slide assembly.

Precision bore. The 6.02mm diameter is tighter than the standard 6.03mm you find on stock barrels. That slight reduction improves air seal and gives the BB a more consistent path through the barrel. Combined with the brass construction and nickel plating, you get a barrel that resists wear from repeated firing and holds its dimensions over time.

Length and fit. At 123mm, this barrel fits standard G17/18 frames, the Desert Warrior, Hi Capa 4.3, and P226 platforms. The length gives you a bit more sight radius than a compact barrel without making the pistol unwieldy for draw and holster work. It's a common choice for players who want a balance between accuracy and handling.

What else matters. An inner barrel alone won't fix a bad hop-up. If your pistol groups wide, check the bucking and hop-up nub first. Pair this barrel with a quality rotary hop-up chamber and 0.25g or 0.28g BBs for the best results. Heavier BBs stabilize better and benefit more from the tighter bore.

Includes just the inner barrel. You'll need the proper installation tool to swap it safely.