The P45 is best described as an incredibly lightweight .45 caliber pistol which features a textured black polymer frame and a matte blackened finished stainless steel slide. The polymer frame has special steel inserts that engage the slide rails for long term durability, reliability and accuracy. The 3.5-inch barrel features 1-in-16-inch polygonal rifling. The P45 will literally fit in the palm of an average hand, being only slightly longer than six inches overall. With a height of 4.55 inches, the P45 is long enough to get all of an average hand on the grip. The KP4544 matte stainless slide is blackened using an ultra hard and super thin coating. This coating has been used successfully in the knife industry to protect blades from corrosion and scratches.