Id entertain the idea of getting a jp adjustible gas block with any 300 bo barrel. The pressure difference between subsonic and supersonic ammo is pretty substantial. And due to the fact that there's not alotta powder gas pressures are kind of weak. But I'd have a gunsmith bore out the gas port a bit if I went that route.
Assumption is the mother of all ****ups.
Know what you know, Know what you don't know. -Paul Pedzolt
"Jack of all trades, master of none, though oftentimes better than master of one" -Mynshul
Last edited by AgentTikki; 08-22-2012 at 04:49 AM.