I went with a Marble's Tang sight on my 20" Puma, and a Marble's Bullseye on my 16" Puma. Tang sight has been sighted in at 100yrds, I have not had the chance to sight in the 16" yet. If I had a Marlin, I might have gone with the Skinner sights, but since my receivers are not drilled&tapped, I went with the sights I did.