AIWB P365X for USPSA carry optics/open

[JCN]

I did a second magazine. Took literally two minutes.

Auto punch follower, drill press, swap spring. Done.

Will test them both tomorrow but I think this is going to be a solution with a lot of extra margin.

[JCN]

First things would be to test the CZ springs.

But maybe if that works there’s a stock solution….



Left is a CZ spring, middle is ProMag spring that I bent a loop and right is a stock spring.

CZ obviously engineered the loop and it seems to help.

What if I drilled a hole in a ProMag follower and bent a loop into the stock spring?

Would that work as a solution that used all factory included parts?

Will see… that’s a better solution for the average Joe.

EDIT: I just ordered some metal forming pliers that I think I can use to make loops and to bend tabs when I cut the 32 round magazines down so that it’ll still work with the base pads.

[JCN]

If nobody cares, I probably won’t engineer the ProMag spring solution.

If the CZ solution works, I have a shit ton extra.



Enough to give @CarlK four for his mags.

If it works.

It does look like the Grams TSO spring might work if people are looking to purchase that.

[JCN]

Other potential options for people without CZ springs might include:

https://lakelinellc.com/shop/new-spr...dard-strength/

https://www.ndzperformance.com/ISMI-...-p365-12rd.htm

[JCN]

I’m feeling bold. It’s been educational working with these mags.

If I’m really going to run in Open class but really trying to compete with CO, I would like at least the 23 round CO capacity.

So I think I’m going to try and make at least one 170mm mag for those stages where you’d really like 23 rounds (or more) on tap.

I think I might be able to get 25 in a 170 ProMag.

With regard to my personality, I wanted my daughter to learn problem solving and commitment / hard work.

When she was three years old, the teachers at day care asked the kids questions about their dads.

I was so gratified that this is what she said.



“Practice” in this case is dry fire. I don’t refer to it as guns or what have you, it’s just “practice” and we expanded that concept to practicing anything you want to get better at.

Also that she identified that I was great at fixing things (and I always include her in how I fix and have her help).

We have enough money that we could throw it away and buy another, but I’m not a pissy bitch and don’t want her to be in a “disposable culture” mindset.

[JCN]

@CarlK

This was with the modified mag body and the CZ spring.

I tried it with an unmodified mag body and it still had some occasional choking.

I think a different follower would prevent having to minor grind the mag body.

If you’re okay with it, I think I’ll do CZ spring and a little grinding as “a solution” knowing that it’s not the only solution.

[JCN]

I’m still thinking that the ProMag really needs a better follower.

This review has me thinking of the Premium follower for gaming reliability.

https://www.sigtalk.com/threads/lake...review.340186/

I ordered 6 of the premium followers and 6 of their +10% springs.

I want to see if there’s a drop in solution for the ProMag 20.

There are gaming mags that are $60-100 so a $30 ProMag body plus $30 in springs and followers wouldn’t be out of line with typical gaming mags (which often use aftermarket springs and followers for competition anyway).

I don’t mind tuning, but if there’s a drop in solution with margin that might be better.

I’ll also try trimming a CZ follower too (but that’s more work and if it’s not necessary then maybe not).

[JCN]

So I had a mag that worked but I still wasn’t happy. It didn’t seem like it had enough reserve without doing additional mag body tuning because of underdesigned follower. So I didn’t like how much effort it took to compensate for a crappy follower.

Persistence is one of my qualities.

So I went one step further and…



Cut down a Shadow 2 follower and used a Shadow 2 spring in an otherwise stock mag body.

Just Dremel narrowed the sides by the nose a whiff and it fits perfectly and cycles like a dream.

Fits 21 rounds AND LOCKS BACK.



“But JCN? Where can I get Shadow 2 springs and followers?!”

Hundreds of these are lying around from USPSA Carry Optics shooters who usually go to aftermarket springs and followers to get more gaming capacity.

So there will be plenty of these lying around. I’ll function test tomorrow, but I’m very confident this will work without any mag body torturing.

[CarlK]

This is some great problem solving JCN! You have permission to do whatever you want with my mags. Thanks!

[JCN]

@joshs

I made an error, I wasn’t measuring mags correctly.



So the 20 round magazines ALMOST fit. If you shaved the base pad you might be able to make it.