Precision-built SIG ASP pistols and rifles depend on quality ammunition and fuel to perform up to SIG standards. And a higher-quality, cleaner gas in a superior-engineered cylinder can influence the lifetime and performance of any airgun. Over time, a poor cylinder seal can mechanically degrade a critical o-ring. Dirty CO₂ can interfere with valves and seals while diminishing velocities – equating to fewer shots per cylinder. Investing in SIG premium cylinders is a simple way to ensure longer-lasting, SIG precision performance.