I can't imagine why a range wouldn't allow legal suppressor use. I completely agree with SR420; I wish everyone used suppressors.
Nothing's more annoying than when you're at the range with some buddies, you're all shooting suppressed, then some guy with an unsuppressed semi-auto rifle with a muzzle break starts blasting away next to you.
That's why I put an AAC flash hider on my main AR; my buddy hated shooting with me because I don't own a rifle suppressor yet. So now I can shoot my rifle with his SDN-6 while I wait for my tax stamp to come in.
0331: "Accuracy by volume."