Arex Delta M 602381: 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. Four interchangeable grip inserts transform the grip ergonomics and enable you to tailor the AREX Delta pistol to your hand.