Apollo 11 17-Round magazines are crafted from premium American-milled stainless steel ensuring top-notch quality. Each tube undergoes thorough through-hardening guaranteeing remarkable strength and long-lasting durability. The tubes are meticulously polished both internally and externally to eliminate any resistance. The follower boasts a design that incorporates Check-Mates’ anti-friction self-lubricating polymer ensuring flawless feeding and optimal function with every round. Moreover Check-Mates’ high-performance springs deliver superb quality unparalleled reliability and outstanding spring longevity. - Compatibility Apollo 11 - Capacity 17 Rounds - Caliber 9x19mm