This specially designed law enforcement weapon system features many of the combat proven advantages of the military M4. With the 4-position Rogers 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 is available with a step-cut barrel that allows it to accept a grenade launcher for non-lethal options. Furthermore the handguard has dual insulated aluminum shielding for more effective heat protection. LE model LE serial prefix M4 Carbine only on roll-mark. LE restrictions on the right side of the mag well have been removed. Detachable magazine. Adjustable A 2Post front sight with Magpul folding MBUS rear sight. Sixteen inch Melonite coated barrel. Single stage trigger. Hard coat black anodized receiver finish. Chrome lined gas key and bolt carrier. 1 in 9 inch twist. High-temp polymer handguard.