ASG Handguard Rail Kit for M4A1
- A very useful 20mm rail kit for any M4 with a standard handguard.
- Kit includes a 20mm rail and screw attachments.
- Attachs through the standardised heat dissipation holes of all airsoft M4A1s.
- Allows the attachment of grenade launchers, flashlights, handgrips and other accessories.
- Not compatible with the ASG foregrip and integrated bipod.