Slide stop theory

[briang2ad]

It is time to get a thread going...

I propose that CZ 75s (a small minority), which do seem to break many slide stops, do so because their stop hole is a bit larger than specification.  This allows 'slop', and 'bangs' the slide stop upon return to battery.  The cheapest fow would be a slide stop which is a bit thicker than spec - thoughts?

[atblis]

Yeah, but what about the camming channeling?  Would that have to be enlarged as well?

[elsolo75]

Maybe those people just put lots more rounds through their pistols than most users ever will. I hear people saying they put a whole 1,500 rounds through their CZ and it didn't break, big deal. I don't even clean my CZ every 1,500 rounds. Let me know what you have needed to replace when you hit 50,000 on the same gun.

[Stuart]

actually if the hole were bigger (within manufacturing tolerances) ..I don't think it would hurt all that much..if the slidestop hole in the frame were not located right or drilled not parallel..then you would get the force of recoil and return to battery at one point which would cause a breakage..the part is designed to take the force over a specified area not at one point.
reason for oversize slidestops in 1911s is to push the barrel up in lockup to keep the barrel from floating around..

the slidestops just need to be done at the right heat treat..too hard they get too brittle and break..not enough..they are too soft and bend..

I think I got maybe only 5000-6000 on one my guns with no problems..shooting reloads and some factory ammo with 11# and 12# recoil springs..I actually expect this thing to last the life of the gun..but that's me..

[briang2ad]

But I have read threads in which multiple guys have fired tens of thousands of rounds with NO breakage, and someone on this forum who has replaced three on one gun.  I think it imporbable that he keeps getting "bad" slide stops.  I think it is the gun.

[Stuart]

or barrel

[Walt-Sherrill]

I think what causes slide stops to break, as EERW suggests, when it's not obviously a defective metal part, is that the frame on some of these guns is just enough out of spec that the barrel lug that surrounds the stop doesn't hit the slide stop evenly.  Hitting evenly spreads the force over a larger area.  Hitting unevenly concentrates the force of the recoil into a smaller area.  

A slightly out-of-spec barrel  (lower lug) might have the same effect.

[briang2ad]

eerw/Walt:

Good points.  Include the barrel - we are referring to the kidney shaped cam right?

[Walt-Sherrill]

Right.