Model 98 Custom with...
Flatline (w/ optional aluminum shroud)
Vertical Ergo regulator
The Spee-T-Cocker effectly converts the M98 to a passive bolt system (no external moving parts). This helps keep the gun clean as well as removes the possibility of getting any of your body parts torn up by any moving gun parts.
Instalation: The STC requires removing the bolt to install. This is a pain in the ass on the Model 98 - especially when you've a Flatline barrel installed. I don't know why they couldn't have used the factory cocking handle and just made the STC a bit thicker. Also, the STC requires that you modify the Flatline shroud a bit.
Use: The STC cocking handle does not have a spring return on it. This isn't *that* big of a deal, but it changes the feel of the product from a refined addition to the gun to the feeling that your next accessory is going to be duct tape or bailiing wire.
The Spee-T-Cocker does everything advertised. But it is not a well-refined product; for just a little bit more design work it could have been SO much better!