The Smith & Wesson M&P FPC is a semi-automatic pistol caliber carbine chambered in 5.7x28mm with a 16.25-inch threaded barrel. It has a blowback operating system, M-LOK handguard, and an optics-ready top rail. The package includes three 10-round magazines. 
 

Key Specifications 

• Brand: Smith & Wesson 
• Model: M&P FPC 
• Caliber: 5.7x28mm 
• Action: Semi Auto 
• Capacity: 10+1 
• Barrel Length: 16.25 in 
• Color/Finish: Black 
   

Detailed Features 

• Blowback semi-automatic operation 
• 16.25-inch threaded barrel 
• M-LOK handguard 
• Optics-ready cut 
• Flat-faced trigger 
• Includes three 10-round magazines

Owners of the Smith & Wesson M&P FPC in 5.7x28mm are generally enthusiastic about the cartridge choice, which offers low recoil and flat trajectory. The folding design and M-LOK handguard get praise for making the carbine practical in tight spaces without feeling cheap.

The threaded barrel and optics-ready rail are frequently called out as welcome standard features. The flat-faced trigger is a split topic: some owners like the consistent feel, while others replace it with a curved trigger shoe out of personal preference.

Including three 10-round magazines in the package is considered good value. The blowback operating system is reliable in owner accounts, though a small number report break-in sensitivity to ammunition type, particularly with lighter 5.7x28mm loads.