The front "Jam" set screw is to hold or jam the side adjustment screw from backing out. the Jam screw does not have to be overly tightened.
The manufacturer doesn't state the set screw size. I recommend contacting the manufacturer in regards to that information.
The gas adjustment is found on the side of the gas block using the small adjustment screw.
Yes, the SADLAK Adjustable Low Profile Gas Block will fit an LR-308 barrel as long as it matches the gas journal diameter of your barrel.
SADLAK does not provide the measurement for the spacing between the set screws on their Adjustable Low Profile Gas Block. I would recommend reaching out to them directly for more information.
Answered my own question. Called Sadlak and was told it's to lock the adjustment screw in place.
Yes. The SADLAK Adjustable Low Profile Gas Block will work for your pistol. Ensure you select the correct journal size for your application, .750 or .936.
It would work fine on those applications.
It does not come with a hex wrench, but does come with all attaching screws included as listed.
Please contact the manufacturer as this information is not made available. https://www.sadlak.com/contact