Smith and Wesson M&P Troubleshooting Guide

Smith and Wesson M&P Troubleshooting

Smith and Wesson M&P

Most semi-automatic pistols operate using the same or in a similar method. However, each manufacturer has their own troubleshooting procedures. This guide focuses on Troubleshooting the Smith and Wesson M&P.

About the Smith and Wesson M&P Troubleshooting Guide

For this Smith and Wesson M&P Troubleshooting Guide, I have compiled a list of the Smith and Wesson recommended procedures for troubleshooting the most common issues with the M&P9, M&P40, M&P357 and M&P45 pistols in the following tables. This is by no means a complete list of troubleshooting steps but is a good starting point for the most common issues that you may encounter. 

To use the Smith and Wesson M&P Troubleshooting Guide, first located your problem in the first column then try the causes starting from the top and working down. If you reach the bottom of the problem and your firearm is still not functioning correctly, you should seek the advice of the Manufacturer or an Armorer that is certified by the manufacturer for that model.  

 

Smith and Wesson M&P Troubleshooting Guide Tables:

 

Extraction and Ejection Issues

ProblemCauseCorrection
Failure to Feed1 - Magazine not properly seatedCheck for proper insertion
2 - Sticky magazine followerClean and inspect magazine
3 - Bent magazine lipsReplace magazine
4 -Underpowered ammunitionReplace ammunition
5 - Weak recoil springReplace recoil spring
6 - Tight extractorReplace extractor
Failure to Chamber1 - Dirty chamberClean chamber
2 - Defective cartridge caseReplace ammunition
3 - Weak recoil springReplace recoil spring
Failure to Extract1 - Overpowerd ammuntionReplace ammunition
2 - Underpowered ammunitionReplace ammunition
3 - Broken extractorReplace extractor
4 - Dirty chamberClean chamber
5 - Shooter ErrorKeep wrists locked and maintain a firm grip when firing
Failure to Eject (including stovepipes)1 -Broken ejectorReplace ejector
2 - Underpowered ammunitionReplace ammunition
3 - Damaged extractorReplace extractor
4 -Shooter ErrorKeep wrists locked and maintain a firm grip when firing
5 - Dirty pistolClean pistol

Firing Issues

ProblemCauseCorrection
Failure to Fire1 - Ammunition failureReplace ammunition
2 - Hard primer in cartridgeReplace ammunition
3 - Dirt or obstruction in striker channel in slideInspect and clean slide
4 - Broken strikerRepalce striker

Slide Issues

ProblemCauseCorrection
Failure to Close1- Dirty slide and barrelClean slide and barrel
2 - Dirty chamberClean chamber
3- Weak recoil springReplace recoil spring
Slide is not arrested after last shot1 - Damaged magazineReplace magazine
2 - Damaged magazine followerReplace magazine follower
3 - Dirty magazineClean magazine
4 - Damage slide stop assemblyReplace slide stop assembly
5 - Shooter ErrorKeep wrists locked and maintain a firm grip when firing
6 - Underpowered ammunitionReplace ammunition
7 - Thumb is riding on the slide stop leverChange grip so that thumb is not riding on the slide catch lever
Slide is arrested before last round is fired1 - Thumb is resting under slide catch lever pushing it upChange grip so that thumb is not riding under the slide catch lever
2 - Improperly installed slide stop assemblyReinstall or replace
3 - Overpowered ammunitionReplace ammunition
4 - Broken slide stop springReplace slide stop assembly