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S&W 637-2, M&P sheild 9mm
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Discussion Starter · #1 ·
I picked it up at the gunshow, in good shape with the squirrel engraved stock.

I posted in the .22 threads with no responses. About 20% of the bullets aren't popping up from the tube magazine in time, bending the bullet in the action. Sometimes they are pointed down, jammed in real good. Usually, the last 2 rounds won't come out of the tube at all, even after repeated manual cycling.

I bought it dirty, took the stock off, and with no further disassembley, did 5 rounds of soaking with brakleen, cycle action a few times, then blow with compressed air. I couldn't find any crud after doing this. So is it clean enough or am I missing some crud? Is it a spring issue? Is there a spring that pushes the round into the action other than the tube spring? The tableholder at the gun show said twice it cycled fine. :p

One last thing, what's the difference between the models 99 and 60?
 

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The tube spring could be weak(unlikely). Wrong inner magazine tube(possible). With the mag tube out does the follower have tension and move freely? If you can eliminate the inner mag tube as the problem then you have to look at the action assembly.
 

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Premium Member
S&W 637-2, M&P sheild 9mm
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12,540 Posts
Discussion Starter · #3 ·
Tube spring seems like it has enough pressure, and the follower isn't damaged or worn. Taking that action apart isn't going to be like a 10-22.
 

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Taking that action apart is not something for a beginner. At the range(or safe place) work some shells thru the action and look closely at where they hang up. It is hardly worth bringing it to a gunsmith. Trade it off when you see something you like sometime.
 

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Premium Member
S&W 637-2, M&P sheild 9mm
Joined
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12,540 Posts
Discussion Starter · #5 ·
They are catching on the sharp bottom lip of the feed ramp. I didn't have the nerve to grind some off of it, even though it looks like it would help. I think I will take it back and *****, hopefully the liar will give me my money back.
 
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