The Smith & Wesson M&P15 is a semi-automatic rifle chambered in 5.56x45mm NATO. It runs a direct impingement action, ships with a 30-round magazine, and uses a VLTOR IMOD collapsible stock with six length-of-pull positions. 
 

Key Specifications: 

• UPC: 022188144093 
• Caliber: 5.56x45mm NATO 
• Action: Direct Impingement 
• Capacity: 30 Rounds 
• Barrel Length: 16 inches 
• Weight: 6.6 lbs 
   

Detailed Features: 

• Direct impingement cycling keeps the action clean and contributes to the consistent reliability the platform is known for 
• 30-round magazine capacity 
• At 6.6 lbs unloaded, the rifle is easy to handle for extended range sessions or when moving through terrain 
• VLTOR IMOD stock collapses to six positions for a custom length of pull 
   

Usage 

The 16-inch barrel and 5.56 NATO chambering are a standard configuration that works across range training, home defense, and light hunting applications. The direct impingement system is tolerant of varied ammunition, and the AR platform's accessory ecosystem means optics, lights, and grips all install without modification.

The M&P15 has a solid reputation for reliability. Owners report it feeds consistently across a range of commercial 5.56 and .223 ammunition, and the controls are laid out in a way that new AR shooters find easy to learn. The lightweight build at 6.6 lbs comes up often as a practical advantage.

The stock trigger is the most common complaint. Many describe it as heavy and somewhat gritty out of the box, which drives a fair number of owners to swap in an aftermarket trigger relatively early. Weight distribution can shift when the rifle is fully accessorized, though this is a common trade-off on any AR platform.

Some early units had minor QC inconsistencies — occasional sight alignment or feeding issues — but these appear to be outliers rather than systemic problems. The rifle is frequently cited as good value compared to other ARs in its price range, particularly for buyers who want a reliable foundation they can customize over time.