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AR15.COM
5/31/2026 6:23:08 PM EDT
I was shooting my HK45 today. I started off with 230 gr FMJ ammo. No issues. I switched over to some Federal HST +P 230 gr ammo and every third or fourth round the magazine would release and I have to tap it back in and run the slide. This only happened with +p ammo. I thought it may have been my grip, but I payed close attention and don't believe it was. I only shot about 30 rounds of this ammo and it even happened once using my dominant hand only. I wanted to see if my left hand was causing an issue.

I've had this pistol six or seven years and although I haven't shot it a ton, I'm probably between 200 and 300 rounds. This may be the first +P ammo that I have put through it. I only had two mags with me and this problem happened with both mags. They both had no issues with standard pressure ammo. Any ideas?
Capitalism produces, communism reduces.
5/31/2026 6:59:19 PM EDT
[#1]
Factory gunk still on the mag retention mechanism.
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They who can give up essential liberty to obtain a little temporary safety, deserve neither liberty nor safety. - Benjamin Franklin, 1775
5/31/2026 8:18:40 PM EDT
[#2]
I don't know if I ever cleaned that. I'll take a look tomorrow.
Capitalism produces, communism reduces.
6/7/2026 7:15:56 PM EDT
[#3]
I put sixty FMJ rounds through it yesterday and 20 of those 230 +P HPs, no issues this time. I'm scratching my head a little bit
Capitalism produces, communism reduces.
6/7/2026 8:00:43 PM EDT
[#4]
I only have the 45c, and shoot the same HST's.  Never had any issues.

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