I stopped by this location today as I was driving and saw a banner that said Gun Store and Range - who wouldn't stop????
I had heard about GTR, but had never been there. According to the staff, there are new owners and it is now Caliber.
The place is very clean the range has tons of stalls. Several rental guns available but you must shoot their ammo for the rental guns. They had .38 .44 .357 revolvers as well as the typical striker fired and hammer guns.
Rifles to .308 and nearly all handgun rounds OK
The two members of the staff I spoke with were nice and willing to show me around. Zero pressure to purchase anything and nobody told me I was an idiot (like other ranges when you ask questions)
The "armory" as they call it was behind a locked cage and there is a sign which says "appt only" for the armory. There were used and new long guns and handguns.
I plan to shoot there at some point and will report back when I do.