Original Fixed-Leg Bipod
Original Mk1 Adjustable-Leg Bipod.
Original Mounting Post for BREN LMG.
It is designed to socket into a hole just over 1.05" OD. 1.05" is the diameter of the post socket.
These came out of Greek arsenals are are likely for mounting a BREN LMG on vehicles or other fixed...
Original Item: BE 4139
Condition typically as shown
Original Item: for Bren bipod, Mk. 2