I bought a 2TL a few years ago. The only difference I see is the lack of sights and no quad rail on the 3 compared to mine.(and lefty)
Great gun ! Ammo I've used S&B, Privi, and Wolf with no issues.
Changes:Magpul CTR stock,Magpul RVG,Eotech 512,Hogue grip,rail ladders,M3 light/pressure pad,2-point sling,Miculek muzzle brake.
I don't think you can go wrong,but I own 2 Stag's
I've since taken off the grip pod clone.