HK USP .45 mag problem

[Pietro Beretta]

I have an HK-USP Tactical .45 Auto and the 2 magazines I have dont hold the slide open on the last shot.

At first they did, but after 1000 rounds and counting that has changed. I have even tried taking the mags apart and gently stretching the springs and allowing them to "'breath".....but back at the range the same thing.

Is there a sulution to this problem? Is there a new spring I can buy that is "HI-Performance" and will be strong/durable enough to last under tention.

The mags still feed amazinely and I haven't had one single problem, except for the slide not locking open.


Thanks for any suggestions.

 

[hr]

if you insert an empty mag and pull the slide back does it lock???

have you tried using some hotter loads?

 

[UncleWalther]

are you sure they are USP mags and not Mark 23 mags? They look almost the same and the Mark 23 mags will feed ammo reliably into the USP .45. I know someone who ordered USP mags and got Mk 23 mags instead, so it could happen.

 

[Ahab]

Pietro, my USP Tactical does the same thing, with the mags that came with the gun, so they are USP Tac. mags for sure.
I think it might have something to do with the fit of the slide lock pin in the hole in the frame. If it is a little tight, the spring pushing on the follower doesn't have enough gumption, or it might be the springs, or maybe the follower, who knows, probably a combination of everything.
I haven't found a solution yet. A little dissapointing coming from a $1400 gun and $60-$70 mags.

Ahab.

 

[Pietro Beretta]

Ahab, you said it brother.

 

[hr]

if that really is the case... you should send your guns back... that's unacceptable....

having said that, i've seen interesting issues where i have no problems /w my USP and the last round holding back, but when another cgn'er shot my gun and a baby eagle neither of which would hold the slide back after the last round. I think it may have something to do /w some kind of limp wristing... get someone else to give your guns a spin for a mag of ammo

good luck

 

[Sinasta]

General consensus in HK community is that the UPS .45 mag springs suck, replace them with wolff +10 springs once they start to act up.

http://www.gunsprings.com/1ndex.html

 

[Pietro Beretta]

I think it may have something to do /w some kind of limp wristing... get someone else to give your guns a spin for a mag of ammo

Uuhhhh..........No, but thanks for coming out

 

[Pietro Beretta]

General consensus in HK community is that the UPS .45 mag springs suck, replace them with wolff +10 springs once they start to act up.

That sounds very good, thanks Sinasta.