E&C AEG M4 Magazine Release Catch — a complete replacement set for airsoft M4 AEGs. Constructed from zinc alloy in black, this full metal assembly includes the stem, button, spring, and Phillips head screw. Weighing just 22g, it fits most standard M4 AEGs without modification, making it ideal for restoring a lost or damaged mag catch. Everything you need in one ready-to-install set.