Download the magazine by 1 round. My 10 rounders do this too.
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I recently purchased a USP9c that was converted from a DOA to SA/DA and I noticed that when I insert the magazine I have to slap it in for it to click in and on all my other USP’s FS or compacts I can just press it in with little to no force and it clicks in place with easy ? I took a quick look but don’t see anything out of the “norm’ any ideas what this could be ?
Is it a 10-rd or 13-rd mag? Was it loaded to the max? Does it happen to all the mags or just one particular mag? Double check the hammer spring in the magwell to make sure it is not bent or touches the mag.
Do post a pic of the mag seated in the gun if you get a chance.
The mag is a 13 round mag and it is unloaded I will post a pic tomorrow when I get home from work
thanks for the feed back
I tryed all the mags I have and that’s the only one that will not click in if I remove the slide it works normally but when I install the slide I have to push the mag forward just a smig and it lock is with out slapping it ? I’m thinking it’s just this one particular mag ?
Now that you have isolated the trouble to that one mag, have you disassembled/cleaned/oiled that mag and tried it again? Same result?
Save the whales. Redeem them for valuable prizes.
Compare with he good mags, check if your calipers can measure a difference.
Check the follower, mag spring length.