Sig Sauer MCX .177 Cal Co2 Air Rifle

Description

The SIG Sauer MCX .177 Cal CO₂ Pellet Air Rifle is a semi-automatic, realistic replica designed for fun plinking, training, and light pest control. Chambered in .177 caliber, it delivers up to 545 fps from a rifled steel barrel.

Built with all-metal construction and weighing around 7.2 lb, the MCX mimics its firearm counterpart in feel and function. It uses 88–90 g CO₂ cylinders housed in the quick-detach buttstock, delivering up to 30 shots per charge via a rapid-feed 30-round magazine. The Gen II model upgrades include a flat-blade trigger, reduced-angle grip, M‑LOK handguard, and ambidextrous safety levers, enhancing ergonomics and performance.

Factory-equipped with front and rear flip-up peep sights (adjustable for windage/elevation) and a full-length Picatinny rail, it’s scope-ready out of the box. Users enjoy its semi-auto functionality and authentic recoil-like sensation for realistic practice. However, regular CO₂ cylinder replacements and occasional seal issues can be costly, as noted in community feedback:

“My MCX is the most fun air rifle I have … running it off the large CO₂ cylinders costs an arm and a leg”.

Overall, the SIG MCX .177 CO₂ rifle offers immersive shooting experience and practical training value packed into a well-crafted, versatile airgun platform.