2-Pack Smith & Wesson M&P 9C / M&P 40C Mag Adapter Grip Sleeve Fits 17 Round 9mm & 15 Round .40 S&W Magazine Conversion for Compact Frame

Not oem but still fit and serves there purpose

I bought this for my M&P 9c, so I could have 17 rds instead of the compacts 12. This covered the extended area of the magazine perfectly, with pretty much zero slip when removing and reloading mags. The grip is decent and it does its job. The magazine seats perfectly fine in the firearm and converts the 17 round mags well.

Perfect fit for my 10 year old M&P 9c extended mag. My original finally cracked and these work perfectly and blend in well. No complaints.

These worked ok, but had some wiggle when on the gun, even when used on factory mags that are loaded. Personally, having a gun grip that shifts is a no go. The simple fix was to add a little bit of hot glue to the back of the mag where the extender sits to fill the small amount of free space. It is completely clean looking and now it is tight when loaded and feels very sturdy. Definitely better priced then the more expensive xgrips, but if you plan on using your mag in a full size gun as well as in a compact with the extender, i might pay extra looking for the better fit, because my modification makes it hard to have the mags do both well. I also tried them with Promags third party magazines and they are way too loose to be acceptable to me. Gotta go S&W mags..

Does not fit the specified weapon. Instructions are not provided.

wanted more mag grip extenders to use full size 15 round mags on M&P .40C 1.0, these were great price so gave a try. fit good enough, I have Grip-X as well, these are half cost for 2 and although finish is not quite as nice get the job done and function just as well. I would buy again, fit my 9mm M&P 17 round mags also for when I do barrel swap to 9mm

Work perfect. It allows extra room for the grip on extended magazines.

I had read some negative reviews about the fit of these... but I mean.. Amazon next day shipping cmon. Gave it a try. I fit the pair onto 2 pmag 17 rounders I use in my 9c that came standard with the smaller mags. I use hyve +3 bases for the standard mags, and these sleeves make my 17 rounders g2g. I always put a hairline layer of superglue around all my mag bases and have never once had a single issue for thousands of rounds with that system not working. Just some extra insurance. Go for em. They fit tight. My only con is the stippling pattern is pretty piddly. You'll want to hit that with a soldering iron or something, the texture is quite smooth, fits my GIANT hands perfectly at least. Project for future me and a stippling job