by Tom Gaylord, a.k.a. B.B. Pelletier Part 1 Today, we’ll finish the conversion of a Gamo 220 from steel spring to gas spring, and blog reader Vince gives us a report on the outcome. If you’d like to write a guest post for this blog, please email us. Take it away, Vince! by Vince When … Continue reading I’ve got gas: Part 2