The Arex Delta is a best in class defensive pistol that boasts extreme reliability and accuracy and comes at a competitive price. This pistol does not claim to be a revolutionary breakthrough but you will find it represents a definitive evolutionary step in modern handgun design and manufacturing. The Arex Delta has a different grip size option to ensure that it fits easily into any hand! This pistol comes with mounting plates and screws to accept most modern red dots!Accepts The following Red Dots:1. Burris FastFire 2 & 32. Holosun HS407C, HS507C & HS508T3. Trijicon RMR and SRO4. Leupold Delta Point5. Vortex Razor, Venom & Viper6.