Features:
- For WE Glock 17/18 GBB series GBB pistols.
- Enhanced polymer material, inner dia :14mm.
- Unique 3° angle shape design increased air-seal effect, reduced gas loss through magazine gas route seal.
- Compatible with Maple Leaf "SNUG-SHUT" Magazine Gasket For WE /KJW Glock Gas Magazine
- Please note the nozzle valve and nozzle valve spring are not included, re-use your originals or purchase if needed.