Make sure you have all the proper tools on hand. No rounded off overseas allen wrenches, no standard screwdrivers(gunsmith style preferred), calipers are always welcome to take precise measurements(no tape measures, lol), and o ring pic tools(plastic preferred, as you DO NOT want to scratch the o ring groove). Do not use vice grips or a BFH on anything! I don’t care what BUCKNMOOSE says.
Do use a mechanical pencil to make index/reference marks for realignment. Make sure you have the proper consumables in lubes. Don’t forget a leak detection solution of soap/water or better yet, CRC leak detection foam spray.
Lastly, very, very important- DO NOT re install your charged carbon fiber bottle till the barrel is back on and locked into place, and all fasteners that tie in the front and rear blocks have been secured.