Glock 19 Clone Build, I have an issue.

[InFamous 311]

I've shared in another thread about my SCT frame being lost. I want to update everyone on the build and an issue I'm having. I have Magpul 10rd mags and on the last round it'll lock the slide open. If I drop the slide stop it'll load the last round. I don't know what is hanging it up. I'll post pictures in a few. Any ideas would be great!

I had an issue where the slide would not go into battery but I oiled a bit more and worked the slide and that has been worked out. I believe that issue is just break in related. 

 

[InFamous 311]

[Mr.Stu 1,922]

In my Glock 19 using Freedom Munitions hollow point target ammo I sometimes get this. https://www.freedommunitions.com/9mm-luger-124-gr-hp-reman.html

What ammo are you using and have you tried anything else?

[InFamous 311]

Just dummy rounds as of now. I haven't taken it to the range yet. 

[Krdshrk 3,877]

Dummy rounds could be too light.

10 round mag springs can be too strong as well, compared to a full sized full capacity mag.

I noticed this on my Jericho 941.  I switched out the slide stop to a dogleg slide stop, which was .1oz lighter than the stock one.  The slide was locking back with 2 or 3 rounds left in the mag vs none.  

[High Exposure 5,664]

12 hours ago, InFamous said:

Just dummy rounds as of now. I haven't taken it to the range yet. 

Wait…

You have not fired this pistol with live ammo yet?

[InFamous 311]

2 hours ago, High Exposure said:

Wait…

You have not fired this pistol with live ammo yet?

I just finished building it a little over a week ago. I have not gone to the range yet, no.

[High Exposure 5,664]

Ok. Shoot it with live ammo and then report back with any issues.

You can’t diagnose last round hold open issues based on admin manipulations with Dummy rounds.