Pistols > Model HSC Pistol

Slide lock and feeding issues

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HSc742:
I recently took possession of a family heirloom Kreigsmarine HSc (742869). It hadn’t been fired in 25 yrs so I stripped it down, cleaned and lubed it. When I removed the grips, the additional parts like the trigger bar, disconnector, etc. came loose so I did my best to reassemble everything. I’m having issues with the slide being hard to pull back and not staying locked back. It will lock back with an empty mag inserted, but close when the mag is removed. It will not lock back with the mag out.

I took it to the range to test fire it the other day. I loaded a couple of rounds and inserted the mag with the slide closed, then attempted to manual cycle the slide and load the first round into battery. The round only went halfway into battery but with a gentle wiggle I was able to get it in and the slide closed. The pistol fired perfectly but the second round failed to enter battery on the cycle.I ordered a complete spring set from Wolff as one possible next step but haven’t installed them. In general, should I go ahead and replace all of the springs on the set as a preventative measure or only change them out to solve a specific problem?

Any thoughts on what might be going on here? Any advice would be appreciated!  By the way, my pistol has clear, plastic grips, not the traditional wood ones. They’ve been on there since at least the 1950’s. Any chance those were original or aftermarket? They’re milled to a precise form and fit for the pistol.

Best regards,HSc742

Warbird:
OK ... lots going on here.  Your Slide locking issue is probably caused by the Magazine Safety timing or wear.  Hopefully you have an Assembly Drawing, if not I can add it to the Forum post (can't on this message).  So the Magazine Safety is a spring loaded hooked bar on the left side of the Frame toward the rear.  It needs to be thoroughly cleaned and lubricated.  Check that is moves easily and the small spring at the rear of the bar is in place.  The hook at the forward end catches a notch in the Slide when a Magazine is removed (timing).  The Magazine Follower holds the Slide back until it is removed, then the Magazine Safety is supposed to drop in that notch to continue holding it back.

The two issues of the Slide being hard to pull back and the cartridge mis-feeds are both related to the Recoil Spring.  It's probably a replacement that is too strong.  Replace it with the Wolff Recoil Spring and I'm betting both problems go away.

The clear plastic Grips are after-market.  I know what you mean about the milled finish because I have a pair also.  I have attached a PDF file of the HSc Assembly drawing.  Part Numbers 7 and 30 are those I have been discussing.  I think that should do it.  Let me know how you make out.

HSc742:
Ok, I replaced the recoil spring with the Wolff spring. I cleaned the inside of the slide where the catch point is located. I cleaned and lubed the mag safety bar with WD40 and MP7. The mag safety spring is in place and appears to be functioning properly.  The mag safety bar rocks up and down; I don’t have a prior reference point so I assume it’s movement is appropriate. With the slide off, I inserted the mag to watch the mag catch the hook on the mag safety bar to raise the bar. When the mag is pulled out, the bar returns to its lower position.


That said, the slide will only lock back with the empty mag inserted. As soon as I pull the mag, the slide releases. It will not hold back with mag out. So problem not solved...


What’s the next suggestion, replacing the mag safety bar itself? I did not replace the mag safety spring yet. Should I do that next? If so, how do you do that? Can you replace it without removing the mag safety bar?


As always, any help is greatly appreciated!

Warbird:
Have you replaced the Recoil Spring?  If not, it could be overpowering the Mag Safety.  The problem is there we just have to locate it.  In all these years I have only had one case where it had to be replaced and that was where it was obviously bent.

HSc742:
Yes, I replaced the recoil spring with the new Wolff spring. The new spring is definitely stiffer than the old one. Which part of the mag safety bar “catches” the notch and holds the slide back, the downward hook at the end closest to the muzzle or the lateral bend at the other end near the spring? Does the disconnector play any part in the slide action?

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