The Heckler & Koch Magazine Catch Spring (H&K part no. 50233126) is a genuine factory part built for the HK416/MR platform, fitted to the MR556A1. It supplies the tension that pushes the magazine catch button back out after each press, and a weak original spring is a common cause of a catch that sticks or does not fully reset.

Key Specifications

• built for the HK416/MR platform specifically fitted to the MR556A1.
• restores magazine catch button return tension where a fatigued original has gone weak.
• factory H&K replacement part rather than an aftermarket substitute.

Frequently Asked Questions

What rifle platform is this for? It is a factory-correct magazine catch spring for the HK416/MR platform, fitted to the MR556A1.

Why replace this spring? A weak catch spring is a common cause of a magazine catch button that sticks or fails to fully reset after being pressed.

Buy the HK416/MR Magazine Catch Spring

Restore a crisp, fully-resetting magazine catch with the current factory H&K spring. Browse more of our rifle parts selection and order from our Lubbock, Texas gun shop for fast shipping.