Features
- Eliminates gaps that may occur in between barrels and the barrel nut, upper receiver and outer barrel, or anywhere in between
- Ensures stability of outer barrel and hanguard system when installing
- Prevents any outer barrel or rail alignment issues
- Different sized shims to fit any situation
Specifications:
Material: Steel
Application: For use with Airsoft M4 / M16 barrel nuts
Package Includes: 20 assorted shims