M4 Diamond Back Full Metal Airsoft Assault Rifle - Black Ops USA

Weighing in at 6.1lbs unloaded, when you pick up the M4 Diamond Back you can feel the solid build quality. Upper and lower receivers, buffer tube, outer barrel, RIS rails, gas block, and flip up sights are all metal, and built to last. Even the polymer grip and Crane stock are made from solid, high impact ABS, just like the real thing. You’ll find the same build quality and attention to detail inside the gun. This Black Ops M4 comes stock with a full metal Gen. 3 gearbox from SRC with with 8mm metal bearing bushings, metal spring guide, upgraded metal piston head, cylinder, and cylinder head, and pre-shimmed all steel gears. The hop up is metal with a newly designed wishbone style hop up arm that eliminates creep while improving consistency and range, and a new high torque

BARRA Black Ops M4 Viper MK5 AEG Airsoft Rifle Table Top Review — Replica Airguns Blog

BARRA Black Ops M4 Viper MK5 AEG Airsoft Rifle Table Top Review — Replica Airguns Blog

M4 Diamond Back Full Metal Airsoft Assault Rifle – Barra Airguns

EMG / Sharps Bros Hellbreaker Licensed Advanced M4 Airsoft AEG Rifle (Color: Black / 10 SBR / 400 FPS), Airsoft Guns, Airsoft Electric Rifles - Airsoft Superstore