This specially designed law enforcement weapon system features many of the combat proven advantages of the military M4. With the 4-position buttstock fully retracted, the Law Enforcement Carbine is less than 30 in (76.2 cm) in length and weighs only 5.65 lb (2.56 kg) - ideal for tactical deployment and traditional patrol. Colt's Law Enforcement Carbine 6940 is available with a step-cut barrel that allows it to accept a grenade launcher for non-lethal options. Furthermore, the new Colt is a 1-peice monolithic upper with a full rail spectrum. This means that the entire upper is machined out of one peice of alluminum making it much stronger than conventional methods.