Installing the sage is very simple really
First thing to note..... you nor any gunsmith should have NO REASON to remove any material from the Sage chassis for fitment purposes. I only say this because you would not believe what some smiths and do it yerselfers have done to thier 1000.00 stocks with files, dremels and god knows what
tools to have on hand
-allen key and castlenut pliers to remove your flash hider
-1/8" punch for removing chinese oprod guide from the barrel
-new 1/8" x 3/4 roll pin in case your chinese one is not re useable (they often split down the middle on removal, source new pin at any hardware store with bulk bins)
- red loctite for the pin if desired, not essential for the sage.
- allen key for the Sage handguard screws and oprod guide
-allen keys for the barrel tension screw and retaining screw at forward end and side of top rail
-rubber mallet to seat the receiver if needed
-small gunsmiths files for removing material from trigger wing and rear contact/bearing surfaces of the trigger group should the trigger not close correctly. This is where i have seen folks remove material from the stock instead of the correct method ..... the trigger group. This only applies to aluminum chassis stocks where filing them to fit would seriouly and permanently affect thier resale value.
pretty straight forward, and remember to fully loosen the barrel tension screw prior to installing the handguard.... and fully tighten the 3 oprod guide screws only once the trigger has been fully seated and locked closed.
for the record, I do not use any loctite on the sage or troy chassis installs other than the oprod guide retaining pin. Contact SAGE or view thier website on correct tensioning of the screws.