A number of companies sell them on-line; BlackHawk.com, Eagleindustries.com, StubbyGear.com just to name a few. I have an Eagle tactical sling on a scout. I also have the BlackHawk sling on some M4's which work nicely. Tried a tactical on my standard, but didn't like the feel (I think the extra barrel length makes a big difference) so went back to the standard web sling.