The threads are really close. Basically you end up filing off a bit to alot of paint, and making the threads less rigid in dimension from SAE to metric. They end up being a mixture of both, and you can use either type of rail on the receiver.
Here's a PTW receiver done this way. You can see how much material was actually removed (very little), and the file used to do the job. Took about 20 minutes.
__________________
Age verifier Northern Alberta
Democracy is two wolves and a sheep discussing what's for dinner.
Freedom is the wolves limping away while the sheep reloads.
Never confuse freedom with democracy.
Last edited by mcguyver; October 2nd, 2008 at 00:12..
|