The bipod is a simplified Mk1 in that it has a Mk1 sleeve and yoke but 'sort-of' Mk1 legs in that while they LOOK like the standard Mk1 legs, they're not adjustable for height.
The rest of it is just as the others have commented. Looks like it needs a new carrying handle or just patch the old one!
Most of the old Brens in service were hybrids like this but the mark type was always as described on the gun body, regardless of its configuration