Complex sentence: They are issued a LWRCI M6A2 carbine as their new personal duty service rifle and also the Rock River Arms CAR-15 and shotguns such as the Remington 870 are one of the weapons trained.
Split into simpler sentences: They are issued a LWRCI M6A2 carbine as their new personal duty service rifle and also the Rock River Arms CAR-15. Shotguns such as the Remington 870 are one of the weapons trained.