NZ-85B and slide stop breakage
- Thread starter faizi
- Start date
Lee Enfield
CGN Ultra frequent flyer
- Location
- Republic of Alberta
Never heard of an NZ slide stop cracking, but cast CZ's break with annoying regularity.
I know of 2 CZ-85s with @1k rounds both broke the same week.
The local range stocks slide stops for it's range guns because they experience it so often.
It would seem to be a design flaw as I've also seen Swiss, Israeli & Italian CZ75/85 clones with broken slide stops.
Having said that, my gunsmith recommends use of a Browning High Power mainspring in CZs (it's a little heavier than the factory CZ mainspring).
I know of 2 CZ-85s with @1k rounds both broke the same week.
The local range stocks slide stops for it's range guns because they experience it so often.
It would seem to be a design flaw as I've also seen Swiss, Israeli & Italian CZ75/85 clones with broken slide stops.
Having said that, my gunsmith recommends use of a Browning High Power mainspring in CZs (it's a little heavier than the factory CZ mainspring).
- Location
- Montreal, Quebec
Which are super easy to change.
Seems to me that if the slide is hitting the stop hard enough to eventually break it that the recoil spring is not stiff enough or it is softening/collapsing soon in it's life and should be replaced. The recoil spring should be stiff enough that it just barely allows contact with the slide stop. So I'd be inclined to thing that Lee Enfield's gunsmith knows what he's talking about (I'm assuming you meant to say recoil and not mainspring).
Big JD-From the hills
CGN Ultra frequent flyer
- Location
- Saskatchewan.
Im not familiar with the cz but would the slide returning to battery cause more impact to the slide stop then recoil?
I understand the slide stop to be the parts that limit the rearward travel.
When the typical semi returns to battery the forward motion is stopped by the slide pushing the barrel forward and up into lock with the slide grooves. The forward travel being arrested when the barrel link locks the barrel into the slide grooves and levers the slide upwards against the rails. There's no actual forward stop other than this levering and jamming of the barrel into position.
However doing this dry (no rounds) does cause quite a shock to the guns. Some more than others. On 1911's it is common practice not to drop the slide on an empty chamber. It puts a hellish shock into the link pin and slide pin and could add to the causes of cracking in the frame at the slide pin hole. If you do it once and hear the "glass like" sound of the parts hitting home you'll understand why folks hold their hand on the slide and ease it down on an empty chamber. Do it on someone elses gun and you'll see a wince of pain in their face and get a lecture on not doing that.
But in normal use there's enough drag from forcing the new round forward, up and into the chamber to slow the slide down so the shock of coming into battery is greatly lessened. In fact on some guns if you let a finger semi lightly drag on the slide as you drop it on a round it may not even go fully into battery. That should be an indicator of how much lighter things are when the gun goes into battery.
When the typical semi returns to battery the forward motion is stopped by the slide pushing the barrel forward and up into lock with the slide grooves. The forward travel being arrested when the barrel link locks the barrel into the slide grooves and levers the slide upwards against the rails. There's no actual forward stop other than this levering and jamming of the barrel into position.
However doing this dry (no rounds) does cause quite a shock to the guns. Some more than others. On 1911's it is common practice not to drop the slide on an empty chamber. It puts a hellish shock into the link pin and slide pin and could add to the causes of cracking in the frame at the slide pin hole. If you do it once and hear the "glass like" sound of the parts hitting home you'll understand why folks hold their hand on the slide and ease it down on an empty chamber. Do it on someone elses gun and you'll see a wince of pain in their face and get a lecture on not doing that.
But in normal use there's enough drag from forcing the new round forward, up and into the chamber to slow the slide down so the shock of coming into battery is greatly lessened. In fact on some guns if you let a finger semi lightly drag on the slide as you drop it on a round it may not even go fully into battery. That should be an indicator of how much lighter things are when the gun goes into battery.
