S&W M&P First Problem In 7000+ Rounds
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Old 06-21-2010, 02:40 AM   #1
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Default S&W M&P First Problem In 7000+ Rounds

At a recent range trip, my M&P started "malfunctioning". If I slam home a full mag, the slide is released, chambering a round. I think this is not normal. Any advise?
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Old 06-21-2010, 08:49 AM   #2
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Slide release/catch is (probably) getting a little worn.

The inertia of slamming the mag home hard, will jar the slide release enough to allow it to move downward as the mag slams home, chambering a round.

Some guys shooting competition like this, as it makes slide lock reloads a little faster. My Kimber will do it occasionally if I slam the mags home very hard but the catch is still working properly, it holds the slide open after the last shot everytime, and only drops the slide if I really hit a mag in there hard enough to jar the release free.

If you're concerned, I'd check and change out the slide release.
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Old 06-21-2010, 09:28 AM   #3
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I have heard of people wanting a feature like that and also some Smith people saying it was a feature. But it didn't do it before so I don't think it's the case. If it was me I'd get me another slide lock or send it to Smith and have therm put one in.
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Old 06-21-2010, 12:50 PM   #4
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Send it back to S&W and let them fix it.
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Old 06-21-2010, 12:54 PM   #5
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Many handguns will do that. Some when new, some when they get broken in. The slide stop may be worn, the slide notch it engages into may be worn. IMHO this is not really a "problem". Seating mags with force to insure they are properly seated will allow this to happen eventually on almost any handgun.
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Old 06-21-2010, 01:00 PM   #6
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Cool. I guess I'll just keep it the way it is until the slide doesn't lock back after the last round.

Thanks guys!
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Old 06-22-2010, 12:31 PM   #7
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Quote:
Originally Posted by dnthmn2004 View Post
Cool. I guess I'll just keep it the way it is until the slide doesn't lock back after the last round.

Thanks guys!
That's what I would do, but then again, I really like it when it slides forward and chambers when I slam the new mag in as opposed to a more gentle loading that leaves the breach open.

Not a good feature for people that have the bad habit of leavin their finger on the trigger. Seen that one. (But then they have a different problem)

Great gun!
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Old 06-22-2010, 03:45 PM   #8
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Slide bumps loose after 7000 rounds. Must be a lemon. I'm feeling generous today, so I'll take the headache off your hands for $50.
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Old 06-23-2010, 12:08 AM   #9
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If I'm ever hard up for cash, I'll keep you in mind . But I think I'll hold onto it for now. As far as a lemon? Maybe. I'll be shooting an email to S&W.
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Old 06-24-2010, 01:13 AM   #10
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With a lightning quick response from S&W, I recieved this today. My question is weather the magazine drop was an intentional design, or if my M&P needed a repair trip to S&W.

Quote:
Hello Dan,

This is done by design.

In a combat situation, (after you have fired it dry) you will slam the magazine home with your left hand while your finger is off the trigger and you move the gun into shooting position. This will effectively cause the slide to drop and chamber a live round.

In a target situation, you would load the magazine as normal, finger off the trigger, move the gun into shooting position then drop the slide by depressing the slide stop. This will drop the slide and chamber a live round.

You are now ready to fire the gun.

Thanks,
SR
I am very happy/surprised now. Glad I don't have to ship it out.
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