The S&W M&P15-22 is a popular rimfire rifle manufactured by Smith & Wesson. It is chambered in .22LR, which is a common and widely available rimfire cartridge. The standard magazine capacity for the S&W M&P15-22 is typically 25 rounds.The 25-round magazine for the S&W M&P15-22 allows for extended shooting sessions without the need for frequent reloading. It is a convenient choice for plinking, target shooting, and training purposes, as the .22LR cartridge is known for its affordability and low recoil.

Please note that magazine capacities may vary based on local regulations and restrictions. It’s important to be aware of and adhere to the specific laws in your jurisdiction regarding magazine capacities and firearm usage.