a-5, pro seal w/delrin bolt, jcs rva, jcs folding stock, response double trigger, crossfire hpa, remote, Palmer inline, flatline, dye xcel 12, lapco 7.5, ... Custom sear and trigger stop.
Tricked out 98C with same setup as A-5, ricochet.
Aluminum vs. plastic and the high rated delrin bolt.
None that I saw. Dead on must have improved the product.
The delrin bolt had received high ratings on the A5OG board so I rolled the dice despite less than glorious reviews over the last few years. I have one on my 98C and it is flawless. Best strength is the aluminum vs. plastic. I've been working to up the rate of fire and the new setup had no negative effects. Smooth as ever and no breaks on the first 2500 shot in a day of advanced play. I loosened the body before pulling out the old tube and the new one slid right in with no issues. Total install was less than five minutes and I went slow. Fired it right up and went full auto to check it out. Found the best price at Action Village / Amazon.