Yes the Rem 51 and the Browning 1910 share similarities. The Browning is a straight blow-back action while the Rem uses a unique locking system of Pedersen design.

The Remingtons number only about 65,000. I'm sure the Browning is far more common.

Here is an interesting article about the Rem 51. Interestingly, it ends in a comparison of the Rem 51 and the Browning 1910.

http://unblinkingeye.com/Guns/Rem51/rem51.html

Interesting weapons. I'm glad we have the freedom to own and use them.

Curl