Originally Posted by TMC
Correct. The 6" gun has a bull barrel and it runs a 5" guiderod and reverse plug for a 5" slide. Its easier to find springs for a 5" recoil system.
Most 6" guns wether they be bull or bushing barrel use a spring for a 5" gun. There a coulpe makers of bushing plugs for 6" slides that have an interior shoulder to support a spring for a 5".
I ended up using an officer guide rod and the reverse plug for my 6" slide and using a 5" recoil spring. I was gonna go with the standard reverse plug and 5" tooless guide rod but I didn't like the look of the empty tunnel. The way I have it setup it looks like a double barrel, lol ... If I have issues running it with this and I'll switch over to how your running your 6" recoil system