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Question about M&P reassembly

1K views 3 replies 2 participants last post by  smitty704 
#1 ·
I detail stripped my M&P 45c last night, to remove my thumb safety(have frame plugs on the way). In the process I thought I would go ahead and finish breaking down the entire pistol. Well, I have never disassembled my M&P before and thought it would be easier then it was.



I got it back together, but, I was curious if I was suppose to have the slide lock spring under the locking block(which it is right now), or under the roll pin. It seems to work just fine, but wanted to make sure my pistol is exactly how it should be.



Thanks in advance. I have never had this issue with my Glock. It was just an ignorant decision to take it apart without proper knowledge.



Thanks, smitty704
 
#2 ·
I detail stripped my M&P 45c last night, to remove my thumb safety(have frame plugs on the way). In the process I thought I would go ahead and finish breaking down the entire pistol. Well, I have never disassembled my M&P before and thought it would be easier then it was. I got it back together, but, I was curious if I was suppose to have the slide lock spring under the locking block(which it is right now), or under the roll pin. It seems to work just fine, but wanted to make sure my pistol is exactly how it should be.Thanks in advance. I have never had this issue with my Glock. It was just an ignorant decision to take it apart without proper knowledge.Thanks, smitty704
I have a lot more illustrative photos but the @#$%## server is screwed up and isn't uploading photos properly.The answer to your question is understanding the similarities and the differences between the trigger pin of the m&P and that of the glock.The M&P trigger headed pin is smooth; the curve of the slide release spring goes around the shaft of the pin, which is why when assembling the gun you have to wiggle and typically push the left side of the slide release forward to move the attached spring out of the path of the pin so it can be advanced, left to right. During insertion of the locking block, if you have the slide release and its spring properly located, the locking block will spring up and down when you push it prior to inserting the trigger pin to hold the locking block in place (this typically is the "first pin" of assembly for the M&P)In contrast, the glock trigger pin has two symmetrical detents, so it doesn't matter how you insert the trigger pin; the purpose of the detents is to provide a location for the glock slide release spring to engage and prevent the trigger pin from falling out; that is why during removal, and to some extent insertion of the pin, you must wiggle the pin to assist in releasing / engaging the detent with the spring. In the glock, therefore the pin is over the top of the spring (unlike the M&P location); in addition, when assembling the glock, the trigger pin is NOT the "first pin"; in the glock, the forward roll pin (not the detented trigger pin ) is the "first pin" on disassembly and the first one placed on re-assembly.If the server functionality improves, I'll upload the photos.
 
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