Thank you for the reply's. I was viewing a picture on a BM59 collection at the Berretta factory. My rifle appears to be the 3rd one down from the top. The pistol grip appears factory origional, The stock has a shoulder device like the M60's did back in the day. The bolt # is 652828-7-SA Z-2.
It closely resembles the 1959 para prototype before they went to the wire stock. The rear swivel. swivels from the bottom to the left side. Two debits for the bipod, no bipod on the gun. The front swivel is also mounted on the left side.
I have not seen another BM62 like this in my short research. The pistol grip is maybe black plastic It looks dark gray to me.
The slide action or bolt has a PB 59 stamped on it. There are 5 holes on the gas tube and the brake is solid no holes.
Im not real camera/computer smart, Ill try and have one of the kids photo and post to the sight this weekend.
Respectfully
Dirk Williams
I got this from the origional owner who stated he purchased this rifle as is.