Ive noted my UEF type 1 handguard has a rounder profile cut, than my WRA, and 3 Inlands.
Is it Marlins cut?
M-U marking
https://www.milsurps.com/images/impo...93896445-1.jpg
M-U profile of clearance cut
https://www.milsurps.com/images/impo...g?t=1293896508
All my others look like this..WRA, 3 Inlands, all are type 1
https://www.milsurps.com/images/impo...g?t=1293896558