*Second bottle is not included.
If you will need an extra bottle please order one from your preferred FX dealer. If interested in the aluminum bottles, 910 AGTR LLC offers scratched/blemished bottles at a discounted rate, found here: https://910airguntuningandrepairsllc.com/products/500cc-aluminum-fx-bottles-scratched
Here are Installation instructions :
24mm Wrench or Socket
14mm Wrench or Socket
A secure vise or someone to help
Step 1 - Remove the air tank
Step 2 - Degas the rifle (de-pressurizing the plenum)
Step 3 - Use a 24mm wrench or socket to remove the bottle connection
Step 4 - Attach double take adaptor using a 14mm wrench or socket (Hand tighten threads first, then use the 14mm to prevent cross threading or stripping the threads). It is recommend to tighten the center bolt to 125-inch pounds or until tight (DO NOT OVER TIGHTEN).
*You may add a small amount of low to medium strength thread-locker to the threads going into the rifle, for maximum security, although it is certainly not necessary.
Wipe away any excess thread-locker if present.
Step 5 - For this step, it is easier to have someone helping you or safely putting the rifle in a secure vise. Start attaching the first bottle, but not all the way to the valve. Attach the second bottle to the same distance. Then, use BOTH hands to secure them at the same time. The adapter acts as a single bottle, so you must put them on at the same time!
* DO NOT use thread locker on the bottle valve attachments, as this can cause severe issues if the bottles ever need to be removed.