KT Ordnance Ruger Receiver Question

[DenverDuck]

Does anybody know for certain if the KT-1 Ruger Mark 1 80% Receiver is already threaded for the barrel? I've tried searching, calling, and e-mails with know luck or response.

Many thanks in advance.

[jfifer]

You may have to request it. A while ago the were only partially threaded for you to time your own barrel.

[ar15barrels]

I have never worked with a KT Mark I receiver, but when I made a Mark 1 receiver from scratch, it was pretty easy to thread it to fit a factory ruger barrel.

[jfifer]

The timing is the most difficult part if you havent done it!

[ke6guj]

You may have to request it. A while ago the were only partially threaded for you to time your own barrel.

not sure what you mean by this. you screw in the barrel completely and then you machine the rest of the receiver based of the barrel's 12 o-clock.

[yari]

^ that's just too simple for most people

[jfifer]

Not every barrel was threaded the same. KTO would thread on a couple threads allowing one to buy the tap and thread until the barrel almost barely lined up, then you finish it with a little torque.

I know because I had one from homegunsmithing.com. I boight it and couldnt find parts any where.you can google it.

[ke6guj]

Not every barrel was threaded the same. KTO would thread on a couple threads allowing one to buy the tap and thread until the barrel almost barely lined up, then you finish it with a little torque.

still not sure what you are talking about lining up on the 80% receiver. all the ones I have seen only had the barrel threads cut, nothing else, so there was nothing to line up with.

and if there was other stuff done to it for the barrel to "line" up with, once the first thread was cut, the indexing is over. the deeper you tap it would not change the indexing. all you could do at that point to change the indexing would be to face the front of the receiver or the back of the barrel flange.

[jfifer]

The KTO receiver had the partial taps and another hole on it. From what I read it was the extractor hole.


Thats why its better to build from scratch.

[ar15barrels]

The KTO receiver had the partial taps and another hole on it. From what I read it was the extractor hole.

The extractor is on the bolt.
It's the ejector that is riveted to the receiver on the little bridge between the magazine and the hammer clearance cuts.

[jfifer]

Oh ok! Then it was that hole. I was 18, had never done an 80. I just loved the platform. Ended up selling for an AR 80. I just doenloaded the prints. If I find parts lits I am making one!!