Arex Delta M 602382: The AREX Delta is a true double action striker-fired pistol. As opposed to some hammerless pistols with fully cocked strikers, the Delta's striker spring is only partially compressed as a cartridge is chambered. AREX has found their Striker Double Action system to be inherently safer than a single-action fully cocked striker. The Arex Delta M has the 4'' barrel and a compact frame. Additionally a flared magwell helps with smooth and fast mag changes. Grip frames now incorporate a multi-slotted Picatinny rail to accommodate an even wider array of accessories.