Description
Maple Leaf 1911 GBB Series 4.3in Chamber Set with 6.02 113mm Inner Barrel and Autobot 60 Degree Hop Up Bucking
This Maple Leaf chamber set combines a hop-up chamber, a 6.02mm inner barrel 113mm long and a Maple Leaf Autobot hop-up bucking rated at 60 degrees. As the name says, it is listed for 1911-series gas blowback pistols with a 4.3in barrel length.
Maple Leaf is a Taiwanese maker best known for its hop-up rubbers and inner barrels for gas pistols and sniper rifles, and its parts are a popular upgrade for players looking for more consistent shots. Buying the chamber, barrel and bucking together as one set means the parts are designed to work with each other, which makes fitting more straightforward.
What each part does
The hop-up chamber holds the bucking and lets you adjust how much backspin is put on each BB. The bucking is the rubber that grips the BB as it leaves the chamber, and its shape and hardness affect how consistently the spin is applied. The 60 degree figure is the bucking’s hardness rating; Maple Leaf makes buckings in different ratings so you can match the rubber to your pistol, gas and conditions.
The 6.02mm inner barrel has a slightly tighter bore than a typical standard barrel, which can help consistency when used with good quality BBs. At 113mm, it matches the barrel length named for this set.
Fitting
Fitting usually involves field-stripping the pistol, removing the outer barrel assembly, and swapping the existing chamber and inner barrel for the new set. Make sure the pistol is unloaded and the magazine removed before you start. Check that the hop-up adjusts smoothly once fitted and test the pistol with the hop-up turned off before setting it to suit your BB weight.
Key features
- Complete set: chamber, inner barrel and bucking
- 6.02mm inner barrel
- 113mm barrel length
- Maple Leaf Autobot hop-up bucking
- 60 degree bucking hardness
- Listed for 4.3in 1911-series GBB pistols
- Parts designed to work together
What’s in the box
- Hop-up chamber
- 6.02mm x 113mm inner barrel
- Autobot 60 degree hop-up bucking
Compatibility
Listed for 1911-series gas blowback pistols with a 4.3in barrel length. Maple Leaf’s 113mm chamber sets are generally sold for Tokyo Marui and WE pattern 1911 pistols, but pistols from other makers may differ, so please compare with your existing parts or contact us with your pistol’s make and model before ordering.
Care and maintenance
Use only silicone-based oil on rubber parts, and keep oil off the bucking and out of the barrel, as it causes inconsistent shots. Clean the barrel occasionally with a cleaning rod and a dry patch, and use good quality seamless BBs to protect the new bucking.
If you are not confident working on your pistol, have the set fitted by an experienced technician, and test the pistol carefully with no BBs or gas before use.
Who is it for?
For 1911 GBB owners who want a matched barrel, chamber and bucking upgrade for more consistent shooting, or who need to replace worn or damaged hop-up parts.
Please note: Tools, gas and BBs are not included. Always wear eye protection when testing your pistol.
