Breech loading

Many types of breech loaders are employed. The most common methods are to use male and female adapters to connect the barrel to the chamber, as seen here: http://www.spudfiles.com/forums/viewtopic.php?t=183

A method favored due to speed is to use a type of cam lock fitting to connect the barrel and chamber. one such example is here: http://www.spudfiles.com/forums/viewtopic.php?t=311

One method that is one of the more challenging to make is a bolt action, which can be seen here: http://pneumaticsniper.mypicgallery.com/

A internal "twist n' lock" can be also used, which is an "inside-out" version of the above sinper, to load a projectile, twist the barrel and pull it from a fitting to open, put in the projectile, push the barrel back into the fitting and twist to close and lock, this takes good measurements to be done correctly, as it may need o-ring grooves will be fitted inside a coupling very tightly(or else a blow-out will happen, makeing a whistle like noise), a "L" shaped groove and a bolt in a coupling to lock it. One advantage this loading method offers is that it looks like a normal muzzel loading spudgun.