I don't have my Armorer's Manual handy right now, but from what I recall, there's no difference between the standard and MOS recoil springs from the factory.

If you're referring to the numbers stamped on the circular metal plate on the end of your factory recoil spring assembly, then no, that's not a spring weight.

Those are production/parts codes. They'll have either two or three digits stamped there.

I agree with Rogue on the number being a production/parts code.


Just as a point of reference I have the 13 stamped RSA in my two non-MOS Gen 5 17s.

Thanks for the spring marking clarifications

Before getting too far into the weeds I'd check and make sure its not your grip/thumbs riding the slide release. I go high thumbs and thats normally my issue on guns that dont lock back.

If that doesnt work then I'd make sure the slide lock lever is properly installed and sitting in its notch. Its an easy check:

Place the Glock tool on the left side of the slide stop lever, directly over the left side of the trigger pin. There must be movement on the right side of the slide stop lever when pressed with the Glock tool. This indicates the trigger pin is properly installed.

That just makes sure the trigger pin is sitting properly in the notch on the stop. Unlikely but that would be my next check if you arent riding it. Good luck

Its me. Thumbs must be riding the release. A change of grip solved the problem. The gen5 slide release much have some different dimentions/profiles.

I wish I would have got a gen4

quote:

Originally posted by gpbst3:
Its me. Thumbs must be riding the release. A change of grip solved the problem. The gen5 slide release much have some different dimentions/profiles.

I wish I would have got a gen4

Yep, the Gen5 lever tabs have a distinct outward bend to them and causing them to stick out further than previous generations.

My g34 does the same thing. I try to keep round count while I’m Shooting (match gun) so I don’t run it dry.
I have no answers as of yet.

SIG P239 for me. I LOVE the gun. Carried for years back in the way back time but it is the ONE SIG that I find myself riding the slide stop.

At one point, all my Glocks had the same factory extended slide lock lever, and I found that I'd contact it with my thumb and the slide wouldn't lock. Occasionally it would lock prematurely, for the same reason. Returning to the factory short profile worked fine, and now they all use the Vickers part.

The problem, not surprisingly, was the operator, not the gun.

quote:

Originally posted by the Hudge:
My g34 does the same thing. I try to keep round count while I’m Shooting (match gun) so I don’t run it dry.
I have no answers as of yet.

lots of guys shooting Glocks in matches file the internal tab off the slide stop to disable it. They either reload before running empty or have to power stroke it after reloading. Supposedly saves time by preventing false slide locks.

Count the rounds required for the stage. Determine a plan for where you'll reload. Unless its IDPA, there shouldn't be a place where the gun runs dry. If it is IDPA, it's a matter of not dropping magazines with rounds in them. Simple solution: don't drop mags. Everything else, chuck the mag at a pre-determined spot, rather than trying to wring every round out of it. Then you don't have to worry about running dry. If you do run dry because you missed a lot on steel, then fall back to an essential skill; mag changes. Try to get them done when moving between stations.