The M6 is a series of carbines designed and manufactured by LWRC International. It is based on the M4 carbine, with which it shares 80% of its parts. The 'M' model name is not a US military designation. Like the HK416, it features a proprietary short-stroke self-regulating gas piston system and bolt carrier/carrier key design, which prevents trapped gases from contacting the bolt carrier or receiver of the weapon. The manufacturer claims that this reduces the heating and carbon fouling of the internals, simplifies field maintenance, and improves reliability.
LWRC M6A2 in a short barrel configuration with a cerakote "flat dark earth" finish, suppressor and holographic sight.
Paul Howe signature edition LWRCI CSAT M6 A1 EVO 1.0
The Heckler & Koch HK416 is an assault rifle chambered for the 5.56×45mm NATO cartridge. It is designed and manufactured by the German company Heckler & Koch.
French Armed Forces 2e REP legionnaires with the HK416F with EOTech holographic sight (Opération Sentinelle. France, 2018)
A Norwegian soldier fires the HK416 towards a simulated target at Al Asad Air Base, Iraq, June 13, 2020.
A close-up image of a G95's fire selector with EOTech EXPS3-0 holographic weapon sight and G33 magnifier on the receiver rail.