More case capacity than a 223 shorter case to allow long low BC bullets in a 223 length AK mag. this thing would make a awsome varmit calibure. could likely get 3800 fps with a 40 grain bullet and with the long stuff iand a fast twist barrel it would really reach out there.
runs a x39 bolt uses resized grendal brass. it would likely be a barrel change and mag mods only on a AK. is a necked down 6mmAR. It may well be my next .22 cal varmit build.