We've had reports of customers experiencing their magazines dropping out under recoil when using the KE Arms ambidextrous magazine catch in the KP-15 and WWSD rifles.

Why is this happening? Why is it something we didn't catch in testing?
It appears to be a combination of factors that we do not experience while test firing 5-10 rounds through each rifle.
1) Bolt speed related to ammo pressure. When the bolt is traveling faster it makes the left arm pivot out at the end of the bolt travel.
2) Shooter stance; if you roll with the recoil too much it makes it more possible
3) Shooter mass: lighter shooters also seem to experience this more often.

Combine all 3 of these and it can happen regularly. We've used some of the returned mag catches in our own personal rifles, and can't replicate the problem because all 3 factors were not present.

If you experience this problem, simply contact customerservice@kineticenergyarms.com and provide your address for a replacement ambi magazine catch spring.

Alternatively you can use an AR15 5.56mm extractor spring as a replacement OR if you're right handed simply replace it with a standard magazine catch.

Rotating the ambi magazine catch in or out will not resolve this.

Replacing the ambi magazine catch spring with the new heavier spring will significantly reduce the possibility of this happening in all but the most over gassed fast moving bolt rifles.  If you are experiencing ejection pattern forward of 3:00 we recommend you add weight to your buffer or increase spring strength in any case.

If you purchased your lower or rifle directly from KEA in 2023 or later, you already have the stronger ambi mag catch spring and replacing it will not resolve your issue. You will need to tune your operating system to reduce bolt speed, or go to a standard mag catch.