ML Upgrade Set Bucking, Hi-Flow Valve and Barrel for GBB pistols, 6.02mm - 138 mm

Precision Inner Barrel by Maple Leaf

The precision tight bore barrel from Maple Leaf delivers better grouping, higher accuracy, and extended range thanks to the reduced bore size. This stabilizes the BB more effectively and minimizes oscillation, improving shot accuracy. Additionally, more air remains behind the BB, resulting in higher muzzle velocity. The barrel is made of chromed brass for durability and performance.

Premium DIAMOND Hop-Up Bucking by Maple Leaf

The Hop-Up bucking is one of the most critical components, alongside the precision inner barrel and quality BBs, influencing the accuracy and range of your airsoft gun. For longer and more precise shots, it’s not necessary to excessively increase muzzle velocity. Finding the perfect combination is an art, and each player has their own ideal setup.
The DIAMOND bucking features a Delta arrow transitioning to a diamond shape, making it optimized for greater range. It is an improved version of the original MONSTER bucking.

MONSTER Hi-Flow Valve

This is a magazine gas release valve designed with an advanced mechanism to allow higher gas flow into the gun. This results in stronger recoil, increased performance, and most importantly, more consistent operation. The redesigned seal ensures optimal gas efficiency.

Warnings

• The quality and cleanliness of your BBs, along with the barrel and Hop-Up bucking, are crucial for accurate shooting. Keep dirt away from your BBs (e.g., when crawling with the magazine in the rifle). Clean the inner barrel regularly to prevent buildup that could affect performance.
• The barrel length should match the original (stock) barrel length for best results.
• Finding the perfect barrel length for your setup is a balancing act that requires considering multiple physical principles.
• The ratio of air volume in the cylinder (or released gas) to the barrel length, known as the Cylinder:Barrel Ratio, is key. Longer barrels or heavier BBs require more air volume, hence the need for different cylinder designs or adjustments to gas pressure.

Recommendations

1. Install the Hop-Up bucking precisely in the cutout of the barrel's Hop-Up window and ensure it is aligned properly using the guiding groove.
2. Before installation, lightly lubricate the outside of the bucking with a silicone oil compatible with rubber materials. Avoid lubricating the inside of the bucking.
3. Do not force the barrel with the bucking into the chamber.
4. Ensure the BB passes freely through the barrel before installing.
5. Center the Hop-Up nub in the chamber to avoid misalignment, which could cause BBs to curve during flight.
6. New buckings require a "break-in" period, typically 200–400 shots, to achieve consistent Hop-Up performance.
7. Initially, set the Hop-Up pressure lightly. Gradually increase pressure after the break-in period for optimal performance and longevity.

Technical Specifications

• Inner Diameter: 6.02 mm
• Material: Chromed Brass
• Compatibility: GNB / GBB pistols using TM standards (WE, VFC, VORSK, RAVEN, and others)