For a reasonable priced Browning M2 Machine gun delivered for less than $500.00 I purchased a Mac Systems Browning M2HB
After paying for the gun it showed up at my door step just under 10 days and was excellent for the price.
The overall length is correct however the Barrel is slightly under sized by 1/4" inch in diameter and the receiver is slightly narrower by 1/2 inch
However it looks great and will fool a 20 year marine corps veteran at 10 feet. for a while.