I'm running a Lonewolf barrel & a Gemtech Multimount on my Glock 34. With the multiple mount's that they make for it, I can mount it on just about any 9mm barrel.
Right now I have the L.I.D. mount with 1/2x28 for my G34, and also a 3-Lug QR mount for use on my 9mm AR pistol. And I just ordered a piston blocking tube for it wich turns the L.I.D. mount into just a threaded mount, and also a 1/2x36 piston just to have another thread option down the road if needed.