[Rancid1845]

Looking to mod a Gen 1. Anyone have any suggestions? Or reading materials?

[Bigjoe11]

Do you mean you want to upgrade an origional sl68 to the sl68 II?

[cpt_crunch]

You could do
- undercocking
-pneumatic assist
-convert to regular back bottle air
-vertical air (with 12 gram changer of course)
-hitman mod
-horizontal feed tube
-autotrigger if it doesnt have one
- new feedneck
-body milling

etc...