Barrels that will fit POF barrel nut

firestorm1284

Sergeant
Full Member
Minuteman
Jun 19, 2010
286
0
40
Wisconsin
Hey 'Hiders, I have another question for the experts. I just picked up a POF upper/lower/MMR set off the classifieds. I remember reading awhile back that the barrel nut/heatsink on the rail prevents you from mounting certain barrels. Can anyone give me some insight here? I want to install a heavy barrel for target shooting.

Any help is greatly appreciated. Thanks!