Years ago I bought the Browning clone of the Winchester 1895 lever gun in 30-40 Krag. I really like the looks of that gun but I wanted better sights. The "correct" sights for that gun are the Lyman #21 receiver sights but they are collectable and very expensive to buy if you can find them. So I put a Williams sight on it a twenty years ago. The Williams sights are very precision with click adjustments for both elevation and windage with locks for both. But...... They looked wrong. They were designed for a 1950's style bolt action rifle and looked the part. I never replaced them because they did work well.
Recently I found an outfit that sells a reproduction of the Lyman #21 receiver sight for the 95, the 86, the 94, the 92 and modern Marlins (Buffalo Arms). So I ordered one for the 95.
It came and I proceeded to mount it onto the Browning 1895. It uses the hole in side of the receiver that gives access to the bolt to lever pin and a stud mounted near the top and rear of the receiver. The first hole exists and only has to be re-tapped and the rear one requires drilling and tapping the receiver. The sight comes with the drill and tap (an extinct size as used by original Winchesters). The receiver was easy to drill and tap when my receiver was put onto my mill (used as a precision drill press) and bolted down. If you have any problem accurately drilling and tapping you should have a professional drill and tap the receiver. Hand tools should not be used, in my opinion, but if you are good with them you may be able to drill and tap the receiver, getting everything straight,without breaking a tap.
The gun now looks right burt this sight is not nearly as precision as the Williams because its adjustments are slip and slide, and matching the engraved lines on the sight body with witness marks on the top of the sight for windage and with a brass pointer tied to the stud in the receiver wall.
If it is the right look you are after and you want better sights than the barrel sights originally provided on these lever guns, the Lyman #21 replica from Buffalo Arms is the one to get. It is not cheap but nothing is today. It is less expensive than the real thing (Lyman #21 collector sight).
Next is a trip to the range to sight the gun in for the new sights.