Downgrade Piston Set | 1911 | GBB

Downgrade Piston Set | 1911 | GBB – this set for your replica

This downgrade piston set is developed for 1911 GBB (Gas Blowback) pistols and ensures a reduced energy output of 1.0 Joule. You use this GBB piston set when your replica needs to meet lower power requirements for indoor fields or when local regulations require a lower output. Replacing the standard piston set with this downgrade version is a direct way to reduce the muzzle velocity of your 1911 replica without modifying other components.

Technical specifications

The set consists of several components made from polymer with a black finish. The piston components are specifically dimensioned for 1911 GBB systems and ensure the correct gas flow restriction to limit the output to 1.0 Joule. The material offers sufficient durability for regular use during skirms.

Compatibility and application

This piston set is compatible with Colt 1911 GBB replicas, specifically models 180512, 180521, 180522, 180524, 180525, 180529, 180530, 180531, and 180532. Installation requires disassembly of your GBB magazine and some experience with the maintenance of gas blowback systems. This upgrade fits builds where power limitation is necessary without compromising the blowback function.

Ready to add Downgrade Piston Set | 1911 | GBB to your setup?