Conversion Carbine Kit is suitable for most Glock 17 / 18 /19 models. Manufactured from a tough polymeric material. The Carbine kit makes it possible to carry your pistol with 2 hands, which offers more stability and comfort. On both fronts of the conversion kit are tactical rails on which various accessories can be mounted. At the bottom of the kit is an opening to place an extra magazine. This makes quick magazine changes quick.