Caliber Choices 1 Laser Engraved ECHO 1 Airsoft AEG M4 M16 Mag Catch
Manufactured by ECHO 1 and laser engraved by Airsoft Ballistics.
Fits ECHO 1 airsoft AEG's and many other airsoft AEG's currently on the market.
Includes the spring, button, and screw.
Manufactured from Zinc Alloy.