We picked up this well used, abused and poorly stored BSA Mercury MK3 today. As you can see, visually it’s horrible with rampant corrosion spoiling it’s inherent good looks. Just a little rub over with good ol’ fashioned 3-in-1 does a pretty good job of reducing the visual impact of this, but more in depth stuff will follow on this subject. It is also going to be a testbed for some BSA break barrel specific modifications and upgrades that we will showcase on here once they are fully tested. You will be seeing more of this old warhorse!

BSA Mercury MK3

Ugly rust

Heavy corrosion of the barrel

Step 1-microfibre and 3-in-1

Cylinder-after step 1

Barrel after step 1, obviously not fixed but a good improvement for virtually no effort