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Page Handguns » H&K
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9/22/2017 12:11:25 AM
Posted: 7/25/2005 10:34:21 PM EDT
I just got my first HK USP45f used.

The slide stop does not engage. Is this because of weak magazine spring?
It does engage if I push and hold the magazine. Is there some way I can make the magazine lockup tighter?

Thanks!


Mike452
Link Posted: 7/26/2005 12:58:37 AM EDT
[Last Edit: 7/26/2005 1:01:36 AM EDT by MMcCall]
Slides failing to lock back is almost always weak mag springs, USP45F mags are somewhat known for this. I'd recommend a new Wolff +10% spring for each of your mags, it's cheap peace of mind.

Looked up the part numbers for you, since I'm cool like that



For use in:

USP - .40 S&W - 10 rounds
USP - .45 ACP - 10 rounds
USP - 9x19 (9mm) - 10 rounds

Stock No. 78671 - +10% extra power - each.....$ 7.49
Stock No. 78673 - +10% extra power - pak of 3.......$ 17.29
Stock No. 78674 - +10% extra power - pak of 10.....$ 47.99

For use in:
USP - .45 ACP - 12 round Law Enforcement Magazine

Stock No. 79331 - +10% extra power - eacH.....$ 7.99
Stock No. 79333 - +10% extra power - pak of 3.......$ 18.29
Stock No. 79334 - +10% extra power - pak of 10.....$ 49.99

Link Posted: 7/28/2005 7:44:08 PM EDT
I got "lucky " and cleaned the innerds of the mag. but I probably need some wolff also.tho it hasnt happend since
Link Posted: 7/30/2005 11:04:22 AM EDT
I fixed mine for good, click here
Link Posted: 8/1/2005 11:50:22 AM EDT
I've never had a failure to feed because of a weak HK mag spring, but IMHO a "weak mag spring" = "bad mag spring"

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