Sig LDC and Magazines Issues

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Planetmail 12

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For anyone that owns a Sig LDC, wondering if you have tried other Sig P226 mags with it and what was the result?

I have multiple P226 mags from a Mk 25 & Legion that I've tried with an LDC and find when the magazine is in and the slide lock is released, the slide moves forward hesitantly and doesn't fully move forward. It hangs back about the same distance you need to retract the slide on a Glock to release the slide lock there. Then the slide needs a push from your thumb to fully engage forward. The issue is only with other P226 mags, new or well used. Usually when loaded up with 10 rounds. Less than 10, the slide moves forward fully.

However with the mags that come with the LDC, which have plastic bases compared to the all metal design of the Mk 25 & LDC mags, I've had no issues at all with operation of the plastic bottom mags They work flawlessly, fully loaded or not.

So I'm left wondering if there's a difference in the magazine that I cannot see and if others have had issue with other 226 all metal mags in their LDC's.

Any other Sig I have owned has never had any issue from day one. They all ran and flawlessly. However this Sig LDC isn't the same and its frustrating. I figured its mags are interchangeable. If they are interchangeable than my LDC has issues.
 
I found the LDC to have a tighter slide to frame fit than a P226, therefore requiring different lubrication to run well. Out of curiosity what are you using for lube on your slide?

No issue with mags.
 
Almost sounds like two separate issues. Is it two hang-ups, one when you release the slide and another to fully go into battery? Or is it a push to get it past the slide lock and then all good?

Have you checked spring tension on the mags in question? The plastic base mags are designed as 10rds where-as the others are hi-cap and pinned to my knowledge. How are the metal ones pinned? Any chance they're pinned tight and increasing the force required to pull to top round off the mag? Is it a different finish/coating on the bodies between the two mag types? Followers the same? Mag lips the same spec?

If you slingshot vs use the slide lock will it seat a round?

A few things to try:

1- thinner and less lube. The less resistance in the lube the more force available to pull and seat round from the mag.
2- different ammo.
3- heavier recoil spring, if you've got one.
4- shoot a few hundred more and see if the problem goes away; I've had guns need a few hundred rounds to settle down, though never a SIG.

Best of luck.
 
Could be your recoil spring binding.

If you get stuck, send it to MD Charlton. They will take very good care of you.
 
Thanks for the help & insight.....

The issue I face is the potential incompatibility of Sig P226 metal magazines with the Sig LDC's metal & plastic bottom magazine. The metal/plastic mags work without issue period. Its the other mags from a Legion or Mk25 that hang up when used in the LDC.

Using gun oil (Hoppes) for lube. I have on all other Sigs without issue.

Not two separate issues imo, when slide is released it is slower moving forward and will not go into battery and seat the round but hang back 1mm or two requiring a thumb to push slide into battery.

Have not checked spring tension of mags. Have used all mags interchangeably with other Sig 226's without issue. New mags or well used mags, until now, the LDC.

Slingshot vs slide lock release yields same issue 99% of the time, randomly slingshot will have slide go into full battery and seat the round but not in smooth fashion, more so hesitantly.

Interestingly I've had one guy recommend using a grease instead of a gun oil to lube, says the gun oil may not be providing enough lube to reduce friction.

I have tried multiple brands of ammo, all with same issue.

Will try one more trip to range after a full cleaning and will lube with Pro Gold Lubricant (grease) to see if lube is the issue or part of the issue.
 
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Planetmail 12 said:
The issue I face is the potential incompatibility of Sig P226 metal magazines with the Sig LDC's metal & plastic bottom magazine. The metal/plastic mags work without issue period. Its the other mags from a Legion or Mk25 that hang up when used in the LDC.

Using gun oil (Hoppes) for lube. I have on all other Sigs without issue.

Not two separate issues imo, when slide is released it is slower moving forward and will not go into battery and seat the round but hang back 1mm or two requiring a thumb to push slide into battery.

Have not checked spring tension of mags. Have used all mags interchangeably with other Sig 226's without issue. New mags or well used mags, until now, the LDC.

Slingshot vs slide lock release yields same issue 99% of the time, randomly slingshot will have slide go into full battery and seat the round but not in smooth fashion, more so hesitantly.

Interestingly I've had one guy recommend using a grease instead of a gun oil to lube, says the gun oil may not be providing enough lube to reduce friction.
Click to expand...

I’ve only used the all metal mags in my LDC.

Generally grease is recommended for slide lubrication on the Classic P Series Guns. Oil is recommended for the more tightly fitted X Series Guns. My LDC would not run well with grease, especially in cooler temperatures. I switched to oil on the slide, and the issues were resolved.
 
I have the original LDC the one with the skeletonized hammer. I have used all my other p226 mags both all metal and the metal plastic combos all points of manufacture as well. I have ,American, Italian, German, and Mec-gar and they all run perfectly. Sounds like it may be another issue rather than mag compatibility. I always run grease on the slides of all my all metal pistols as well.
 
At the range again comparing the mags included with the LDC vs the mags from a Mk25. LDC's mags no issue, MK25 (metal) mags still catch on slide release, but will function if the slide is racked. Looks like I'll be contacting MD Charlton once shot show is over.
 
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