How to thread a barrel and common thread patterns....
 

RIFFLE CALIBER THREAD SIZE FROM Dynasystems-ltd.com

WITH UPDATES AND ADDITIONS BY QUARTERBORE

AR-15, M-16, AR-180 .223 (5.56mm) 1/2x28
AR-15, M-16, AR-180 9mm and 7.62x39 1/2x36
AR-10 5/8x24
Ruger Mini 14 (blue) .223 (5.56mm) 9/16x24
Ruger Mini (stainless) .223 (5.56mm) 9/16x24
Ruger Mini 30 (blue, stl) 7.62x39 5/8x24
HK-91/ G-3 308/ 7.62 15x1
HK-93/ 33/ G-53 .223 (5.56mm) 15x1
HK-94/ MP-5 9mm 9/16x24
US M1/M2 Carabine 30 9/16x24
FN-FAL US Match 308 (7.62) 9/16x24
FN-FAL Para/ SAR-48 308 (7.62) 9/16x24
FN Heavy Barrel 308 (7.62) 11/16x24
STEYER AUG .223 (5.56) 13x1 LH
AKM/ AK-47 0.223 14x1 LH
AKM/ AK-47 7.62x39 14x1 LH
GALIL 308 (7.62) 13x1 RH
GALIL .223 (5.56) 13x1 RH
UZI Carabine/ SMG 9mm 5/8x24
UZI Carabine 0.45 5/8x24
M1A/ M-14 308 5/8x24
L1-A1 308 9/16x24
MAS 1949-56 308 17x1

Instructions:

http://dynasystems-ltd.com/threadingkits.htm

Edit: Updated Link to Dynasystems info page

QB, I think you need to mention that the "metric" FN's are LH thread
and just myself I would like a referance to the "other" end of the barrel as well, you have posted only muzzle threads. I could use an AR barrel extension thread size ( otherwise I will have to wait for my extension to get here to finish my lathe work)

Thanks
Dan

Well, anybody that has that info please post it... I will try to find some of the info when I get a chance but I don't know when that will be...

btt.......

Hmmm, I have the ar 15 barrel extension size around here somewhere I THINK it is 1"x 16 but I will look it up and get back to you. Also I have the thread size and pitch for FN/FAL's as well. metric and "inch" are the same, the only exception is the isralie "izzy" as most FAL people call them, and they can be chased to a standard metric thread, as no one currently has available receivers in the "correct" thread size (entreprise used to advertise them but I have no experience with them)