The Smith & Wesson M&P15 Sport is a semi-automatic .22 LR rifle with a 16.5-inch barrel and 33.8-inch overall length. It weighs 5.2 lbs and holds 10 rounds with an additional magazine included. The six-position adjustable stock, A2 flash hider, and black polymer grips are standard. Carbon steel barrel and aluminum receiver construction. 
 

Key Specifications 

• Brand: Smith & Wesson 
• Model: M&P15 Sport 
• Caliber: .22 LR 
• Barrel Length: 16.5 inches 
• Overall Length: 33.8 inches 
• Capacity: 10 rounds (additional magazine included) 
• Weight: 5.2 lbs 
• Safety Mechanism: Two-position safety 
• Finish: Matte Black 
   

Features 

 
The six-position adjustable stock lets users set length of pull, which matters both for fit and for training applications where multiple shooters use the same gun. The A2 flash hider reduces muzzle flash visibility during rapid fire. AR-style controls and ergonomics make this rifle useful as a low-recoil training platform for shooters who run larger caliber AR-pattern rifles. 
 
At 5.2 lbs the gun handles easily even during extended sessions. The included extra magazine adds practical range utility. .22 LR ammunition runs at a much lower cost per round than centerfire, making this useful for high-volume practice.

The M&P15 Sport in .22 LR gets broadly positive user feedback. Affordability, light weight, and the familiar AR ergonomics are consistently praised. The adjustable stock is highlighted as useful for fitting different shooters. Most owners report reliable function with quality ammunition.

Its use as a training tool gets frequent mention, particularly for new shooters or those transitioning to larger-caliber AR platforms. The low recoil and low ammo cost make extended sessions accessible.

Build quality relative to more expensive rifles comes up in some critiques, with a few owners noting certain components feel less substantial. Accuracy at longer ranges is occasionally described as limited, which is more a caliber characteristic than a model-specific issue. Magazine compatibility with some aftermarket options has drawn isolated complaints. For recreational shooting and basic training the rifle is widely considered good value.