Rear Sight and BP Bullet lube

[OLD and GRUMPY]

Are there any easy rear sights for my Companion magnum BP mini? Would they help? I know that with enough range time and practice I would not need them. I also promised a range report on the mini.Hope to have time to properly do that soon.

I started using Thompson BP bullet lube stick to seal the cylinder over the bullet. This has solved several problems.
  1--It does not melt out of the cylinder in 100+ temps like bore butter or other lubes. Even when left in the sun.
  2-- My hands were still black but not greasy.
  3--The carbon in the bore wiped about 90% clean then just needed a light scrub and oil. That was after sitting dirty for 24 hours.

One guy said he makes "crayons" out of the stick for easy cylinder sealing.