The .30 caliber 701 Air A.I.R. Mag is designed for left-handed FX Impact shooters. A press-fit ball bearing and constant-tension spring support smooth, consistent feeding of pellets or slugs, while the carousel provides one additional round over standard FX stock magazines. Eight magnets secure the clear face plate and four rear magnets hold it during reloading. Left-hand use requires the 701 Air conversion kit; the magazine is intended for FX Impact M3 or M4 rifles.