Stainless steel Caspian Arms Glock 23 top end. No longer available from Caspian. Includes Caspian stainless slide with front cocking serrations, Caspian adjustable rear sight (Bomar style) burried in slide, Briley .40 cal match barrel, Wolff recoil spring, weighted recoil reducing spring guide, and one (1) Glock .40 cal magazine (not pictured). Can be used to replace the top end of your G23, or can convert your G19 to .40 cal. About 200 rounds through it, and still in excellent condition. $375. Shipping included.