Re-Barrel to 300blk?

[dmaxfireman]

After quite a bit of reading I have been thinking about re-barreling my stag model 8 (piston) to 300 blackout. After comparing my options I think I have come to the conclusion that out of 6.5 / 6.8 / 7.62x35 / 7.62x39 / 7.62x40 the blackout will be my choice.

I like the idea of having to change nothing but the barrel. I have plenty of 5.56 brass I can cut down and reload.

My question is if I get a 300 blackout barrel where should I start with gas port size on the barrel with the stag piston setup?

[VLODPG]

Just sell off your upper & buy what you want. It will be less grief in the end.

[dmaxfireman]

If thats what it comes down to I will just purchase / build another upper. I was just hoping that it would be simple.


My idea for the build is to hybrid the best of the AR and the AK into one rifle.

[GunnutAF]

It would be if you had a DI system , I know the port whole for a 300 BLK is larger then 5.56mm barrels so it might not fuction properly with a piston.

[dmaxfireman]

I'm going to do my homework, might just get another upper and assemble with an adjustable piston system and start small and work up.

My next question is: How worthwhile is the 300blk over a 5.56. I cannot run a suppressor in CT unless I have a preban lower which I have not decided on yet. Would I be better off investing my $$ on another project? I have searched and read about it enough to make my head spin but have not fired one.