Meta Tactical Smith and Wesson M&P 2 Barrel 4in 9mm 16in Black. 6in M&P 2.0. Combine this barrel with an APEX Bullpup Carbine Conversion Kit for a compact precision shooting experience. The slim ultra-lightweight 16in barrel design is a result of years of experience combined with around the clock R&D and testing. Specifications for Meta Tactical Smith and Wesson M&P 2 Barrel: Manufacturer: Meta Tactical Color: Black Finish: Nitride Fabric/Material: Chrome Moly Caliber: 9mm Luger Gun Make: Smith & Wesson Gun Model: Smith & Wesson M&P Barrel Length: 16 in Barrel Material: Chrome Moly Barrel Twist Rate: 1-10 Flutes: No Weight: 1 lb Country of Origin: USA Features of Meta Tactical Smith and Wesson M&P 2 Barrel American Steel Polygonal Rifled Button Rifled High Precision / Tight Tolerance machining Improved Lock up for increased reliability and accuracy Package Contents: Meta Tactical Smith and Wesson M&P 2 Barrel Thread Protector Muzzle Device What firearm models does the manufacturer say Meta Tactical Smith and Wesson M&P 2 Barrel is compatible with? The manufacturer says that Meta Tactical Smith and Wesson M&P 2 Barrel is compatible with Smith & Wesson M&PMeta Tactical MTB-MP2-4: Smith and Wesson M&P 2 Barrel 4in 9mm 16in Black