I am looking to install an Armalite AR 30 brake on this rifle. Armalite's thread size is 5/8 18 UNF 3A. I am not the best machinist in the world, so are these threads larger, or smaller than the 18/1 threads on the Sako? Can an adapter be made? Could the threads on the Armalite brake be machined out, and a sleave with the proper threads installed? Any help would be great.
Thanks.
R.
P.S.
5/8 diameter converted to metric is 15.875. So the existing 5/8 thread size is smaller than the metric 18mm. This leaves thread depth. 18mm minus 15.875mm is 2.125mm, divided by two is 1.0625. Translated to inches, this leaves a thread depth of .042 inches.
Would this be enough material left to work? Is my math right? Help!
Thanks again.
R.
PPS Have moved to Gunsmith Forum. Thanks. R
Last edited by Rman; 04/08/08. Reason: Moved to Gunsmith Forum
