Here we have a New, never used excellent Glock 21 Gen 4 in .45acp with 3 - 13 round magazines in box with accessories! This one has seen little use and looks brand new! Glock 21 Gen4 is known for its accuracy and light recoil, the GLOCK 21 Gen4 delivers the power of the 45 Auto round with high magazine capacity. The Modular Back Strap system makes it possible to instantly customize its grip to accommodate any hand size. The reversible magazine catch makes it ideal for left and right-handed shooters The Gen4 system is the perfect complement to the 45 Auto caliber cartridge.