Sig Sauer Airguns AC1240 CO2 Cylinders 12 Gram 40 Per Box

Keep your CO2-powered air pistols and air rifles running with the Sig Sauer Airguns AC1240 pre-filled 12-gram CO2 cartridges. These factory-sealed, single-use cylinders deliver consistent pressure for CO2-powered repeaters and semi-auto airguns that accept standard 12-gram neck-style CO2 cylinders, including the full lineup of Sig Sauer Airguns CO2 pistols and rifles.

Each cylinder features a compact, lightweight silver finish with a sealed single-use valve. They ship factory-prefilled and ready to drop in, so you can swap a spent cylinder and get back to shooting without extra tools or refilling equipment. Sold in a bulk pack of 40 cartridges so you always have plenty of spares on hand for range days, training sessions, or extended plinking without scrambling for a replacement mid-magazine.

Whether you run a Sig Sauer Airguns P365, 1911, MCX, MPX, or any other CO2-powered airgun with a standard 12-gram cylinder port, the AC1240 provides a factory-spec reload in a convenient count. Always inspect the seal before installation and dispose of spent cylinders responsibly.