Re: Ring height M1A
Ahem, but not all mounts are as low as others.
I'm running a SA Gen III (follow the bloody instructions and it works okay), and the ability of the bell to hang out front and below the mount means a medium (3/8 to 1/2-inch) ring has PLENTY of room above the handguard.
I'd go as low as a cheap set of Weaver rings if I had a line on some...cheap...
ETA: The objective lens is 50 mm.