We get to see the Ohio Ordnance Works HCAR or the Heavy Combat Assault Rifle in this video by Managerial Outcomes. This a semi-automatic rifle is a heavily modified derivative of the Browning Automatic Rifle (BAR) and is built on an Ohio Ordnance M1918A3 receiver. This design allows it to maintain the ruggedness of the original BAR design while incorporating modern features that make it more adaptable to today's warfare environments. 

Dig this custom M1918 BAR from Landwarrior Airsoft? It's out stock right now though but you can request to have one made for you for £699.99... "This started life as a AY BAR, that was a long time ago. The customers request was to update and modernise the Browning Automatic Rifle into a all round platform. The Samson rail was the ideal choice although much adaptation was required to get the final fit exact.