Maple Leaf - Hi-Capa Hop Up Chamber and Inner Barrel Set - 138mm

Maple Leaf hop-up chamber and 138mm tight-bore inner barrel set for long-barrel Hi-Capa pistols, built with the Maple Leaf bucking you choose.

It goes into the slide as one pre-assembled unit, replacing the chamber, barrel and bucking together. The 6.02mm tight-bore barrel groups tighter with good BBs.

Each set is assembled to order from parts in stock, so only buckings currently on the shelf can be selected.

Barrel: Maple Leaf 6.02mm tight-bore, 138mm long. Check the length against your slide before ordering.

Bucking choices: Maple Leaf Autobot, Decepticon and MR Hop in the original and 2023 rubber or the 2021 silicone, plus the 2026 Delta and Diamond in rubber or silicone.

Fitment: WE, Tokyo Marui and KJ Works Hi-Capa pistols with an outer barrel long enough for a 138mm inner barrel.

Maple Leaf part number: CH21H6G138 (with 60° Autobot), CH21H7G138 (with 70° Autobot). Other buckings: CH21G138 followed by the bucking's own part number.