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SERVICE ADVISORY - MP7 Bolt Catch fails to lock
Posted by KWA [Jim R.] on 25 February 2010 11:03 AM

We have received a couple reports on MP7 Bolt Catch fail to lock when magazine is empty.

The problem is due to damaging the BB Follower by continuously slamming/springing the BB Follower when magazine is empty.

MP7 Magazine

This should be the correct position for BB Follower when BB is emptied in the magazine.

When BB Follower is pushed all the way up, it will engage the lock to catch the bolt.

When BB Follower is damaged. It will caught outside of the mag well and will not push all the way up.

Hence the Bolt Catch arm will not engage and fail to catch the bolt when mag is empty.

Do not release magazine follower when the magazine is empty. Doing so will damage the magazine and magazine

To view the forum discussion on this topic, click the following link.

Comments (1)
Christian Patton
24 April 2012 08:12 AM
I just wanted to say thankyou to whoever posted this i was having a problem with my bolt catch an this trick worked. Im so happy i got everything to work i bought the gun used and i thought it would b another thing tht wasnt fixable. Once again thankyou very much for this tip.
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