STI Problem

[Ginster6]

Can anyone tell me what I did wrong.

Just pickup my STI out of jail yesterday. and went shooting with it.. gun shot like a beauty.

And when I got home I cleaned it. by only removing the slide,rod, and barrel.
put everything back together. and the problem just started.

Place a empty Mag in gun. want to rack and lock the slide back. once I drop the Mag. the top slide also rack back "ready to shoot mode".

And notice with empty mag. once of every 5-10 time rack back it will lock.

see video and advise. dont Mind the backround mess.

https://youtu.be/y20tzEsqX9E

[ThatFishGuy]

Your slide stop isn't going high up enough into the slide notch. Your follower could be slipping past the inner lobe, or the slide stop is hanging up on something. Check for contact, and try to watch the mag follower as it pushes up on the slide stop to make sure its engaging fully.

[ThatFishGuy]

Also, does your slide stop have a detent cut on the rear face? (Where the plunger tube meets it). If it does it may need to be smoothed out, but what I mentioned before is more likely.

[jinx5000]

contact STI and explain what's going on. They'll likely have you send the gun back and will take care of it quickly.

I've had to send my STI Trojan in once and they resolved my problem quickly and has been flawless ever since!

[Pofoo]

Make sure your slide stop pin goes through the barrel link

https://thefiringline.com/forums/showthread.php?t=557403

[mtenenhaus]

is it only with that one magazine or do all the magazines do the same thing?

[Ginster6]

is it only with that one magazine or do all the magazines do the same thing?

only have one mag. I have 2 more new one from dawson on the way.

[JTROKS]

Check how much of the follower is engaging the slide stop tab. Remove the top assembly and insert the slide stop into the frame. Apply a little downward pressure on the slide stop, now insert an empty magazine slowly. Pay attention where the contact points are. Are there any wear on the mag follower where it contacts the slide stop? Maybe the slide stop tab is too short, possible 45 slide stop in a 38Sup/9mm/40.

[Ginster6]

So I think I found the problem. When racking it back the slide lock does not go up all the way.

what do you guys think. and how to fix.

[MosinVirus]

Shouldn't have cleaned the magic off.

Before sending the pistol back in, please show us a couple of pictures.

Soecifically, I want to see how much of the slide stop head engages the slide stop notch in the slide when you manually lock the slide back (lifting the slide stop with your finger) and another picture of how much it engages when you do get the magazine to lock the slide back.

Then show us a picture of the magazine follower. Just looking at the lifter shelf of the follower.

Then show us the slide stop head. I want to see how the slide engagement area looks, the slot, and the retaining tab from the slot side. Also the face of the head where the plunger runs against it.

[MosinVirus]

...

[MosinVirus]

So I think I found the problem. When racking it back the slide lock does not go up all the way.

what do you guys think. and how to fix.

Are you always using aN empty magazine to lock the slide back? Can you lock the slide back manually (with your finger pushing up on the slide stop)?

[Dvrjon]

Can anyone tell me what I did wrong.

Just pickup my STI out of jail yesterday. and went shooting with it.. gun shot like a beauty.

And when I got home I cleaned it. by only removing the slide,rod, and barrel.
put everything back together. and the problem just started.

Occam's Razor: Among competing hypotheses, the one with the fewest assumptions should be selected.

-Gun worked fine out of box.
-You stripped and reassembled the gun.
-Gun no longer works fine.

What has changed since you fired the gun?

Eliminate that variable.

Strip it down and put it back together, again. Go slow; pay attention.

This is the simplest and least-costly action available to you, and is directly related to the onset of the problem.

[Ginster6]

Are you always using aN empty magazine to lock the slide back? Can you lock the slide back manually (with your finger pushing up on the slide stop)?

no.. at the range on after the last round. I eject mag. the slide will close.

[MosinVirus]

no.. at the range on after the last round. I eject mag. the slide will close.

So, when you were shooting the gun at the range, and the slide locked back on empty, you took the magazine out and the slide returned to battery on its own?

Thst would not be a flawless working gun then.

Can you manually lock the slide back, Not using the magazine? And show a picture of how high the slide stop goes when you do that.