This is a factory Smith & Wesson M&P-5.7 5.7x28mm 22-round magazine.

The new M&P-5.7 pistol features an impressive magazine capacity of 22 rounds and is fitted with a 5-inch barrel. Operating on a gas-operated, locked-breech system designed to work with the 5.7mm cartridge, it is quite different from the typical delayed blowback tilting mechanisms.

Features:

• Durable steel body construction
• Anti-tilt, high-visibility orange polymer follower
• Steel wire spring
• Impact-resistant polymer base plate
• Side-facing round indicators

Pick up a few extra M&P-5.7 magazines for your new pistol today!