CO2 Magazine for Smith and Wesson M&P 9 Blowback Airsoft Pistol by Softair Umarex KWC

"Good, solid mag. Heavy, but that's a good thing. No problems with leaks or anything of that nature. I got quite a bit of rounds from one Co2 cartridge.

"This works with the EMG / SAI / Smith & Wesson Licensed M&P 9. Yes you read right, this mag works perfectly with the EMG M&P9 RIGHT OUT OF THE BOX NO MODS NEEDED. Makes your EMG M&P9 more gas efficient.

"These are the exact mags that come withe the SoftAir USA/CyberGun S&W M&P 9. Very nice mags and have had no problems as of yet. I can get through 6 complete mags on 1 12g CO2 and about 2/3rds of a 7th. No sign of leaking but I wouldnt leave them around unused with a CO2 catridge in them.

"This is a nice co2 mag but it most definitely does not fit in an EMG SAI M&P 9 unlike what one of the other reviews said. If it was just a matter of dremeling some off to make it fit no big deal, but the gas valve on this mag is about 3/8" lower than the mag that comes with the EMG SAI M&P 9... no way to get around that. I knew buying this it wasn't designed for my gun but I wanted to try running co2.

It is a very nice co2 mag and it deserves 5 stars, I just wanted to make anyone else looking to buy this to run co2 in an EMG SAI M&P 9 aware that it does not work with that gun

"good solid mag. good co2 press nut. the bad it says it fit my M&P 9mm but it does not. the bottom has 2 protrusions on the sides im guessing for better fit of the CO2 and it wont slide in my mag slot