The 5.0 E model is designed with functionality in mind. It operates on a single action only (SAO) mechanism, ensuring a crisp and clean trigger pull. The lightening cut, optic cut, and serrated steel slide enhance the pistol's functionality and readiness for customization. The pistol's overall length of 8.11" and a frame made of steel ensure a balanced and sturdy feel.Additionally, the pistol is equipped with green fiber optic front sights and a serrated, blacked-out rear sight configuration for improved target acquisition. The black textured GFN grips provide a comfortable and secure hold. The pistol also includes three magazines, a case, and two optic plates for added versatility.Rock Island Armory 5.0 E Specifications Brand: Rock Island Category: Pistols Series: E Model: 5.0 Caliber: 9mm Luger Capacity: 17+1 Action: SAO Frame Finish: Armor Series Overall Length: 8.11" Frame Material: Steel Hand: Right Hand Slide Finish: Armor Series Slide Material: Steel Slide Description: Lightening Cut / Optic Cut / Serrated Barrel Finish: Black Barrel Material: Steel Twist: 1:10" Grips: Black Textured GFN Sight Configuration: Green FO Front / Serrated, Blacked-Out Rear Trigger Pull Weight: 4.50 lbs Grooves: 6 Height: 5.17" Includes: 3 Magazines / Case / 2 Optic Plates Safety: Trigger Width: 1.33" Barrel Description: Steel Barrel Length: 4.91" Max Capacity: 17 Weight: 2.12 lbs Frame Description: Steel Frame with Picatinny Rail