SIG SAUER 1911 .177 Cal 17 Round Air Rifle Magazines. Features a locking notch so ammunition may be loaded more easily than traditional 1911 air pistol magazines. Now not only does the air pistol weigh and feel like a standard 1911 pistol but reloads like one as well. Along with the ammunition the magazine also houses the CO2 cartridge. This allows for a similar experience as a standard 1911 reload. Specifications for SIG SAUER 1911 .177 Cal 17 Round Air Rifle Magazines: Manufacturer: SIG SAUER Color: Black Magazine Capacity: 17 Round Projectile Caliber: .177 Caliber Caliber: .177 Pellet Gun Make: SIG Sauer Gun Model: SIG Sauer 1911 Number of Rounds: 17 Features of SIG SAUER 1911 AIR PISTOL MAGAZINE - BLACK 177 CAL 17/RD: Caliber BB cal (4.5mm) Magazine Capacity 17 rounds Package Contents: SIG SAUER 1911 .177 Cal 17 Round Air Rifle Magazines Allen Wrench What firearm models does the manufacturer say SIG SAUER 1911 .177 Cal 17 Round Air Rifle Magazines is compatible with? The manufacturer suggests that SIG SAUER 1911 .177 Cal 17 Round Air Rifle Magazines is compatible with SIG Sauer 1911SIG SAUER AMPC-BB-ES: 1911 .177 Cal 17 Round Air Rifle Magazines