RWS Umarex S&W M&P9 M2.0 MAG .177 Magazine 18 Rounds. 0 .177 caliber bb pistol this is the spare magazine you need to keep right on shooting. This drop-free magazine holds a single 12-gram non-threaded CO2 cartridge along with 18 BBs. Loading BBs into the loading port is made much easier by the addition of a follower hold-down tab cut into the BB channel. Pick up a spare magazine or two to aid in magazine change drills or just to keep the fun at the range going for a longer time. Specifications for RWS Umarex S&W M&P9 M2.0 MAG .177 Magazine: Manufacturer: RWS Color: Black Magazine Capacity: 18 Round Projectile Caliber: .177 Caliber Caliber: .177 Pellet Gun Make: Smith & Wesson Gun Model: Smith & Wesson M&P 9 M2.0 Package Contents: RWS Umarex S&W M&P9 M2.0 MAG .177 Magazine What firearm models does the manufacturer say RWS Umarex S&W M&P9 M2.0 MAG .177 Magazine is compatible with? The manufacturer suggests that RWS Umarex S&W M&P9 M2.0 MAG .177 Magazine is compatible with Smith & Wesson M&P 9 M2.0RWS 2255005: Umarex S&W M&P9 M2.0 MAG .177 Magazine 18 Rounds