English Airgunner likes the EMG Helios Noveske N4 MWS Gen 3 Gas Blowback Rifle after testing and checking its internals. As it uses the Marui MWS system which is unlike the standard gas M4 systems uses a short-travel roller hammer to reduce wear on the bolt, hammer, and valve knocker. It also features a steel bolt lock plate to prevent common issues like bolt stop wear and accidental unlocking on the last round.