Anyone used the Tactical Solutions rifle barrels? I've got one of their Pac Lite Pistol barrels for a MKIII/22-45 and like it well enough but I have not seen the rifle barrels 1st hand. I'm not too sure about the alum. bbl. with steel sleeve thing really. The pistol bbl I got at a gun show new and it was just priced too good to pass on. My rifle project though I'm wanting to make sure it's a good one and I wont want to go replacing it again.