Description:Thin Stabilizer Ring:Length: 25mmInner Diameter: 9.6mmBottom Outer Diameter: 10.9mm Can be directly installed inside the outer tube, suitable for modifications with limited space or requiring concealed installation. Provides stable support without affecting appearance, effectively improving inner tube coaxiality and shooting consistency. An 11mm hop-up can be installed inside the outer tube. Note:More difficult to remove once installed.May slide deeper into the outer barrel if not positioned properly. Thick Stabilizer Ring:Length: 25mmInner Diameter: 9.6mmTop Outer Diameter: 11.6mmBottom Outer Diameter: 10.9mm Effectively prevents accessories from slipping into the outer tube during use, ensuring a stable and reliable installation position. Through a reinforced support structure, it effectively fixes the inner tube position, reduces wobbling, and improves shooting stability and consistency. However, the 11mm hop-up cannot be directly inserted into the outer tube and must be installed externally. Note:Not suitable for internal mounting setups.May require external installation in limited spaces. Packing List: 1 * Stabilizer Ring
