The answer to the flange...
I went ot a gun show today and took a good look at a p556 with fishgills. They do not fit into the gas block like the regular handguards do and have a collar that holds them in place. The SWAT rails should work with the gas block when the collar is removed.
I went ot a gun show today and took a good look at a p556 with fishgills. They do not fit into the gas block like the regular handguards do and have a collar that holds them in place. The SWAT rails should work with the gas block when the collar is removed.