The quadmount comes from trumpeter's 1/16th M16MGMC kit, which requires a lot of detail work.
I also choose to substitute the .50 guns with Tamiya items, better detailed in my opinion.

Side frame rebuilt with u channel,weld seams added with epoxy putty.

Classical before-after shot.

Quadmount frame well underway.

Side plate temporarly fitted

Tamiya M2BMG, choking handle moved to  left side,Aber brass barrel fitted.The original barrel is slightly short, incidentally the Aber barrel also needs lenghtening by 1.2mm