all the loctite you see in diy shops isnt what you need, they're talking about glues etc.
the loctite paintballers use comes in 3 strengths and uses the lack of air to become bonded.
it goes like so:
Blue loctite (usually in a 15ml tube) light strength, used for making sure screws dont move ( for triggers etc) or sealing air parts like macro line elbows.
Green usually in a smaller tube of 3ml. stronger than blue, will take boiling water or to be heated very hot, like leaving a hair dryer next to it for 30 mins to break the bond. used for internal parts, such as a hammer and ram being joined together on an impy.
Red. not sure what size this comes in, but its basically like welding something, you wont be able to unscrew it. i really cant see a reason why red should have to be used to be honest.
i got my blue loctite from smart parts at last years campaign, but it isnt on their website. you can get green loctite from planet eclipse (
www.planeteclipse.com )
My green lotite says on it ' LOCTITE 638 HIGH STRENGTH RETAINING COMPOUND'
the blue says ' LOCTITE 242 THREADLOCKER'
i advise only to buy paintball specified loctite ie what i have listed.
some mechanics and plumbers may have some for screwing parts together aswell...
hope this helps

(wow that was long)