The all new G40 Gen4 in MOS Configuration combines a full 6 inch barrel length for improved velocity with a 15 round capacity magazine. The G40 Gen4 in MOS is a powerful yet easily carried pistol for the outdoorsman, hunter and sport shooter. Designed to give the handgun hunter the ultimate choice in semi-automatic hunting handguns, the 8 inch sight radius improves shootability with open sights while the MOS system gives the shooter the ability to mount all popular reflex sights. Reflex sight advantages include faster target acquisition and enhanced long range accuracy. If you are a 10mm enthusiast, this is the GLOCK pistol you have been waiting for.