Toby Posted January 18, 2014 Report Share Posted January 18, 2014 I know that you can change the thread on the Jet Z but I remember reading that this didn't apply to all of them. I have searched the forum to try and find out which models it didn't apply for. I have a 1/2"x 20 unf CQB on my 17 Rem but would like to purchase a 18x1 thread for a rebarrel in the future. Hope that someone can help with info, Link to comment Share on other sites More sharing options...
Jagged 77 Posted January 18, 2014 Report Share Posted January 18, 2014 Contact Jackson rifles they will tell you (I know you can with the utra jet-z compact as I've had one done). You will need to send your mod off to Jackson's to have it done as it's not a user replacement part. Link to comment Share on other sites More sharing options...
Will0 Posted January 18, 2014 Report Share Posted January 18, 2014 I'm not sure if they'll sell you the individual part, however I'm sure you can do it yourself, a friend swapped his SL5 and SL7 threads over Link to comment Share on other sites More sharing options...
SteveW Posted January 18, 2014 Report Share Posted January 18, 2014 Contact Jackson rifles they will tell you (I know you can with the utra jet-z compact as I've had one done). You will need to send your mod off to Jackson's to have it done as it's not a user replacement part. I've done the same as Jagged 77. Very helpful company and fast turn around, can't remember costs though. Link to comment Share on other sites More sharing options...
Toby Posted January 18, 2014 Author Report Share Posted January 18, 2014 OK, Jackson Rifles doesn't seem to have an eMail adress. I am living abroad and would like just to purchase the threaded section of the mod so that I can Get it changed at a gunsmiths over here when I shorten or rebarrel current rifle. Link to comment Share on other sites More sharing options...
.300wm Posted January 18, 2014 Report Share Posted January 18, 2014 Hi, Steve Kershaw did mine for me and changed it to a 14x1. He is fairly easy to contact. Cheers Link to comment Share on other sites More sharing options...
22/250 foxer Posted January 19, 2014 Report Share Posted January 19, 2014 mate if you get i can get them off my local smith. Link to comment Share on other sites More sharing options...
Tony.H Posted January 19, 2014 Report Share Posted January 19, 2014 why not leave the thread as it is and have the new barrel thread the same, as the mod? saving time and money tony Link to comment Share on other sites More sharing options...
onehole Posted January 19, 2014 Report Share Posted January 19, 2014 I have replaced the threaded section of these types of mods many times to suit different rifle builds.Jacksons may well have a new and suitable threaded section in stock or they will thread out to suit and supply to your local RFD ,Smith etc.I gather they are not a proofed or sectioned item.Getting the old threaded sectioned off is sometimes fun but with the moderator body locked in a lathe or similar and use of a correct socket will soon have the old section out of the way.A bit of heat sometimes helps as well.The ones I have done I have reassembled on a lathe keeping the threaded section well trued to the moderator body as I slowly tighten up.This is probably not strickly necessary but I have found the mating threads sometimes a bit sloppy.Take care Onehole. Link to comment Share on other sites More sharing options...
Toby Posted January 19, 2014 Author Report Share Posted January 19, 2014 Thanks for the replies. I have 1/2"x20 UNF on a 19mm varmint profile at the moment. Not ideal but ok. I am thinking of shortening the barrel a few inches and a thread change to 18x1 seems the cheapest option. Link to comment Share on other sites More sharing options...
onehole Posted January 19, 2014 Report Share Posted January 19, 2014 Thanks for the replies. I have 1/2"x20 UNF on a 19mm varmint profile at the moment. Not ideal but ok. I am thinking of shortening the barrel a few inches and a thread change to 18x1 seems the cheapest option. 18x1 on a 19mm end muzzle diameter?Think a Smithy would probably recommend a bit more meat to lock up on than that?I,m not an engineer but 15x1 or imp equivalent possibly?,,,,,O Link to comment Share on other sites More sharing options...
Toby Posted January 19, 2014 Author Report Share Posted January 19, 2014 It is 19mm at the muzzle. If I cut it back 1-2 inches I am presuming it will be a larger diameter there, perhaps 20-21mm. I have nt measured yet though. Atb Toby Link to comment Share on other sites More sharing options...
dannyt Posted January 26, 2014 Report Share Posted January 26, 2014 An 18 x1 thread will fit on a 19mm barrel (the thread is just under 18 mm and that's the OD of the thread) but it will leave very little shoulder to stop the mod against to the rear if the Mod , (I think you are mounting a forward mounted mod not a over barrel type} if your barrel is contoured as most are with a strait taper you will be better with a 17x1thread or 14x1 the latter two will serve you better in my opinion Link to comment Share on other sites More sharing options...
gazzar15 Posted January 26, 2014 Report Share Posted January 26, 2014 What is the thread on your mod right now? Link to comment Share on other sites More sharing options...
gazzar15 Posted January 26, 2014 Report Share Posted January 26, 2014 Sorry mate I mis-read your original post Link to comment Share on other sites More sharing options...
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