['Ol Grandad]

Look at the mag. lip engagement on the rounds. That's the difference.

 

[Fatboy2001]

I bought two Shield Gen. 1 mags when they came out. For range/match use only. They never malfunctioned - 1000's of rounds. I never swapped the mag catch. The OEM's are cheap. I would never would consider using Shield mags for carry. If it really matters and my G48 HAS to work, I'm going OEM. Just a thought. YMMV.

 

[Sono Io]

I am corresponding now with shield and I will let you all know what they say

 

[vindibona1]

This is the best I can do to illustrate the seating of the bullets, comparing OEM mag with S15. I wish I could have been square over the top of both.
The black slide is a 43x with S15. The FDE slide is a 48 MOS with OEM mag inserted. Federal HST rounds.
As you can see, the S15 has the round sitting a bit closer to the breach face. In the mag well the S15 does rock a bit more than the OEM. But still, I have had zero failures with the S15 over a few thousand rounds.

Because I have slides and lowers that are interchangeable and thus mag options I have no intention of putting a steel mag release in the 48 so it can handle S15's. If I did that it would mean a whole lot more testing for reliability. But if you're just starting out with S15s, the appropriate mag catch and reliable testing is required. If failures occur, I would suggest callling Shield Arms before throwing in the towel. If I'm not mistaken they have Gen 3 S15's in the works by a different mfr (but I could be mistaken). I have both Gen 1 and Gen 2 S15's and no issues.

 

[Perfection?]

If you already own the pistol and mag, don't waste time analyzing an issue that may not exist on that pistol. Treat guns and magazines as individuals, each should be tested before being trusted.

In my opinion, the gap from the front of the bullet to the breech face tells me nothing. The SAAMI spec. for 9mm is between 1.000 and 1.169 in length. A pistol/mag should be able to handle a broad range of ammo,from my experience I would expect more issues as you near the short or long side of the spec depending on shape.

 

[Perfection?]

The Gen 3 Shield S15 has bumps on the back of the mag. The video someone added showed the round too far back, evidently that was the issue. Looks Like the bumps on the back of the mag move the rear of the bullet forward.

 

[Sono Io]

Well, fellas, I am happy to report that my obsessing about the S15 mags was all for nothing

Today, I put 300 rounds through 3 different Gen 2 S15 magazines without a single malfunction! I DID install the metal Shield mag catch.

I am REALLY happy about this!

I was using my G48, which I carry every day, and it's a great feeling knowing that I have 16 rounds in the gun.

PSA and their mystical polymer 15rd mags can go you know what now

 

[yep380]

Well, fellas, I am happy to report that my obsessing about the S15 mags was all for nothing

Today, I put 300 rounds through 3 different Gen 2 S15 magazines without a single malfunction! I DID install the metal Shield mag catch.

I am REALLY happy about this!

I was using my G48, which I carry every day, and it's a great feeling knowing that I have 16 rounds in the gun.

PSA and their mystical polymer 15rd mags can go you know what now

300 rounds of what?

 

[Sono Io]

300 rounds of what?

Speer GD 124gr and Federal ball

 

[yep380]

Speer GD 124gr and Federal ball

If you’re planning on carrying with those mags, I hope you ran enough GD through it to be confident in its function. If so, good report.

 

[Sono Io]

If you’re planning on carrying with those mags, I hope you ran enough GD through it to be confident in its function. If so, good report.

Thank You Brother

Yes, most of the 300 were GD's so I feel great about the mags now and one is in my G48 right now

 

[SilverBiscuit]

I think you shouldn’t hand cycle ammo. It doesn’t indicate how your gun will run while under recoil and it’s a safety concern.

As far as the difference in how the round sits, that may or may not be an issue. Your gun may run fine, or it may not. The only way to tell is to test it extensively under live fire.

I won’t carry a gun that won’t hand cycle and actually got rid of a gun for this reason. If I need to clear a malfunction I need to know that it’ll eject an unfired round and load when manually cycling. As far as the safety concern, always use proper/safe handling practices and you won’t have a problem.

 

[yep380]

I won’t carry a gun that won’t hand cycle and actually got rid of a gun for this reason. If I need to clear a malfunction I need to know that it’ll eject an unfired round and load when manually cycling. As far as the safety concern, always use proper/safe handling practices and you won’t have a problem.

Understood. If you want to insure your gun hand cycles ammo, there’s only one way to tell. I do it with primerless/powderless rounds when working up a new load. I don’t do it with live ammo.

What I often see is people thinking they’re going to learn something about why their gun is jamming under live fire by hand cycling live ammo. This obviously isn’t the case, yet you see it mentioned often. Live fire under recoil and charging a weapon by hand are two entirely different operating conditions.

There are several reasons hand cycling is dangerous; administrative handling of a firearm always requires extra caution and repeated cycling of a live ammo increases the odds of a negligent discharge. Bullet setback is another issue from repeated cycling and can result in an over pressure situation. Bullets are made to be loaded and fired, not repeatedly run through a gun.

 

[Biggy1]

After years of trying all the generations of the Shield S15 mags, their mag releases and +10% springs, I sold them all. For me they just were not as reliable in function as the Glock factory OEM mag with all different types of ammo. Also, using their mag releases, the mags would drop way to easy, just by barely touching the mag release. I also dumped my 43X pistol and have absolutely no regrets about doing so. IMHO, there are better pistol and mag options out there today.

 

[Sono Io]

After years of trying all the generations of these mags mag releases, +10% springs, I sold them all. For me they just were not as reliable in function as the Glock factory OEM mag. Also, using their mag releases, the mags would drop by barely touching the mag release. I also dumped my 43X pistol and have absolutely no regrets about doing so. IMHO, there are better pistol and mag options out there today.

I thought the same way until I gave these S15 mags and Shields mag release a try.
Again, no issues of any kind with 500 rounds fired. Mag release function and feel are the same as OEM

So now I have 15rds in my G48 instead of 10 with a slimline profile and a feel that is MUCH more comfortable than my G19

To each his own...just giving my 2 cents