Grand Power P40 10mm -- meh.

[Big10]

It was either in this thread or the other currently running P40 thread, there was mention that the double action trigger was like a S&W revolver's double action trigger.  I don't agree with this assessment.  The weight is about the same, but revolver double actions can be staged, this one can't.  And my P40's trigger stacks towards the end of the pull unlike a revolver.  For me to not notice it, I have to pull through pretty fast and my aim goes to shit.  It reminds me more of my wife's sig P232 double action pull, which is pretty bad.

[Intercooler]

I want to go the other direction and convert my 9mm into a decocker.

[PCFlorida]

It was either in this thread or the other currently running P40 thread, there was mention that the double action trigger was like a S&W revolver's double action trigger.  I don't agree with this assessment.  The weight is about the same, but revolver double actions can be staged, this one can't.  And my P40's trigger stacks towards the end of the pull unlike a revolver.  For me to not notice it, I have to pull through pretty fast and my aim goes to shit.  It reminds me more of my wife's sig P232 double action pull, which is pretty bad.

And while I agree with that, in fact it is a perfect assessment, I shoot my P40 better than I ever shoot my Kahr CM9

[Big10]

I want to go the other direction and convert my 9mm into a decocker.

Life is short.  Go for it.  Hope it works for you.

[Big10]

Modified safety/decocker seems to work fine.

Well, this gun probably has to go back. I put another 200 rounds through it today with 5 shooters (3 experienced 10mm shooters) each having the magazine drop out of the gun from 1 to 3 times during their firing.  One was in disbelief and couldn't understand why the mag was on the ground.      I'm disappointed, I really wanted this to work out.

[Big10]

And while I agree with that, in fact it is a perfect assessment, I shoot my P40 better than I ever shoot my Kahr CM9

Glad it works for you, really.  Ironically, my wife commented on how much she likes my CM9 today at the range over the P40 -- go figure.

BTW, she didn't care for my Kimber Micro 9, but loves the P238.

[PCFlorida]

And while I agree with that, in fact it is a perfect assessment, I shoot my P40 better than I ever shoot my Kahr CM9

Glad it works for you, really.  Ironically, my wife commented on how much she likes my CM9 today at the range over the P40 -- go figure.

BTW, she didn't care for my Kimber Micro 9, but loves the P238.

LOL, I just can't get used to that L-O-N-G trigger.

[gcw16]

Big10, don't take this wrong but I'm glad I'm not the only one with the mag drop problem. I don't know where you are but they have different service centers in various parts of the country. I had to send mine to a place in Indiana. They just got mine this past Thursday so I haven't heard anything from them yet.

[SavageOne]

Modified safety/decocker seems to work fine.

Well, this gun probably has to go back. I put another 200 rounds through it today with 5 shooters (3 experienced 10mm shooters) each having the magazine drop out of the gun from 1 to 3 times during their firing.  One was in disbelief and couldn't understand why the mag was on the ground.      I'm disappointed, I really wanted this to work out.

Have you disassembled the mags and cleaned them? If you give that a try, while you have the spring and follower out, pull they slide and see how they are mating with the mag release.

[Big10]

@SavageOne: Yes, I had previously disassembled the magazine and removed the release from the plastic grip.  I also looked at the magazine after this last firing.  The magazine was very clean with no debris, really nothing to clean.

The magazine release button had some residue on it, but nothing that looked like it would impede the magazine catch from fully locking into the magazine body.  However, the magazine release button thickness at the caming surface looks to be a critical dimension in how far it allows the catch's rotation to engage with the magazine.

This design looks to be susceptible to stacking tolerances under recoil.  The magazine body moves about in the grip frame even when "locked", allowing the magazine catch to be either fully engaged through the locking notch -- proud of the interior wall by at least .003" -- to partially engaged.  Further, the catch rotates in the plane in which the recoil forces operate and is not impeded by the magazine release button in the direction of unlocking.  I.e., the magazine release button cams the catch to unlock, but doesn't prevent the catch from moving in the unlock direction.

Which all may sound like gobbledygook, but boils down to under heavy recoil the catch and magazine can spontaneously unlock.  I'm convinced this is going to be a recurring problem and it has nothing to do with "hitting the release button by griping it improperly".  One key observation I had at the range was that the problem occurred to a much greater extent with Sig Sauer 180gn Elite (180gn @ 1250fps) than either S&B 180 FMJ and Armscor 180 FMJ.

I'm going to run a test with some HDPE tape applied to the rear of the magazine to restrict the magazine's reward movement and see if that doesn't keep the magazine locked.

[SavageOne]

Yeah, I quickly came to the conclusion I was not hitting the mag release. With that said the issue has disappeared now. I had issues within the first 100-200 rds, and have not seen a reoccurrence since that initial range trip. I am over a 1000 rounds at this point, using both factory and RYOs and it hasn't been an issue for me. I do have two new mags sitting in my safe I have yet to try out yet and when the weather dries out I think I will load them up and see how they preform.

It did seem like the rounds were sitting a little far forward in the mag, when I was having this problem and I remember wondering if they were actually nosing the release and causing the mag to drop.

[PCFlorida]

Big10, don't take this wrong but I'm glad I'm not the only one with the mag drop problem. I don't know where you are but they have different service centers in various parts of the country. I had to send mine to a place in Indiana. They just got mine this past Thursday so I haven't heard anything from them yet.

Has yours come back yet? If so, what is the verdict?

[gcw16]

Big10, don't take this wrong but I'm glad I'm not the only one with the mag drop problem. I don't know where you are but they have different service centers in various parts of the country. I had to send mine to a place in Indiana. They just got mine this past Thursday so I haven't heard anything from them yet.

Has yours come back yet? If so, what is the verdict?

They have had it for just over 2 weeks now. I haven't heard anything from them. I will post after I get it back and go to the range.

[longslide10]

The mag drop issue seems to have been a part of the break in for those of us who have one. I had it on one of my early range trips, but haven't had an issue with it since. I think a good strong and forceful seating of the mag will help. Did you have any problem loading the mags to capacity? Both I and PCFlorida noted a bit of an issue until the springs got a little worn. It may help the mag drop issue if you take the slide off, stick you finger down the magwell(from the top), depress the mag release catch, and let the mag release button fall out. You can then give it a good cleaning and also lube the catch and spring.

I am a bit surprised by you saying how it feels odd in your hand. I absolutely love how mine feels and so has everyone I have let fondle it.

As to the thumb safety, I understand your complaints. When I first got mine I was sure I would never be able to adjust to the tiny speed bump on the safety. I was sure I would want to order the extended safety that Eagle offers, then I got a look at one on the Excaliber. The thing is huge. It is primarily designed for competition shooters and would be very unrealistic on an ordinary pistol. The choices seemed to be between none and too much, but I took Intercooler's kind advice and tried it with the small bladed safety and now have no issue with it.

I probably have around a 1000 rds through mine and on the last range trip I started having some feed problems and it was hardly launching brass. I have replaced the recoil spring and it seems to have solved the problem.

I hope it starts to grow on you, and you reconsider it for EDC. I EDC mine every day and the only problem I have had is finding holster options for it. It will fit in holsters for EAA Polymer Carrys w/rail. I also ordered one from EagleImports and it's OK, but I prefer the one I got from the holsterstore.com for my EAA. I have also read that it will fit holsters for Sig 320s, but I don't have any first hand knowledge on that topic.

Best Wishes

I have a Witness P Carry and find it fits well in holsters for my H&K USP 40. Just FYI.


Sent from my iPhone using Tapatalk Pro

[10Tens]

Well, my P40 has the same mag drop issues. I sent it off to the gunsmith a week ago. Crossing my fingers he can get a fix for it. Otherwise it's a 800.00 paperweight!