Description 3rd Generation Glock model 21 chambered in .45 ACP with a 4.5″ barrel and 1, ten round removable magazine. 3rd generation frame with front checkered finger grooves and stippled sides. Standard Glock white U sight. Rear slide serrations. Smooth composite trigger, serrated rectangular magazine release and slide stop. Under barrel rail for accessories. Must ship to FFL holder. Condition: Very Good with very light scratching on slide and finish wear on edges. Bright and sharp rifled bore. Barrel Length: 4.5″ Serial: DML246US Manufacturer: GLOCK Caliber: .45 ACP Model: 21 Book# 02671