Are you sure the FSB is riveted in place? I've got two PSA uppers with standard FSB/gas blocks, and they've got the correct pins.
I'll be removing one of the FSBs this week.
Here's a bit of info from someone that knows a thing or two on the subject.
http://www.ar15.com/forums/t_2_138/1...aper_Pins.html
__________________
COTEP #CBOB0353
Happiness is a warm, dirty gun.
Last edited by Grizzman; 07-05-2016 at 10:51 PM.
|