Nighthawk Custom Drop-In Mag Release Kit - Stainless Steel Nighthawk Custom Drop-In Mag Release Kit - Stainless Steel - SDP1021 Nighthawk Custom’s Drop-In Series mag release, lock and spring are a simple way to upgrade your 1911 pistol. Each part is Fully Machined™ from a premium-grade 416 stainless... MSRP: Was: Now: $59.99 Add to Cart