R dogger, Lone Wolf barrels, threaded or otherwise are not that good as evidenced in price compared to KKM or Barsto. If you're wanting to use it with a "can", you also need to specify thread pitch of suppressor, usually 1/2 x 28 for 9mm? KKM or Barsto also "match grade" and will shoot circles...
Jave a friend who is FFL in St Louis area and gets Hi Point when no one else can. 9mm pistol is $179 MSRP and that is what he sells them for; but don't know about 45, and had spare mags, too. 45 would be MSRP as well!
Have a "P" series new 870 with 18.5, rifle sights, mag extensions avaiable. PMax, speedfeed, Surefire light forend, Wilson Combat ghost ring sights, tritium dot and comes from Remington set up like this. Can see in Remington Law Enforcement web area, not commercial!