Slings

[NewType ZERO]

you can pretty much go with any sling.. its all about your comfort.

[shadow1911]

2 point and 3 point very from kit to kit.

essentially all guns can use both sling types(in a perfect world)

2 point is better for multiple weapons as they can be set tight against ones back. a 3 point is better if all your going to be using is one rifle like a safety and less weight line. 3 points are better for patrolling wile a 2 point is better for storing. 3 points some times get caught up in gear. but 2 points can as well.

In short its more based on your kit and preferences.

[freddyclaw]

Are there any good ones in Canada or should I order from the United states or just go to a local gun smith place?

[tunabreath]

make one yourself:
http://arniesairsoft.co.uk/?filnavn=...ling_howto.htm

2 point is obviously much easier. You could use a luggage shoulder strap if you wanted