this is the one i'm using on my SOCOM, locks up tight too... and you can still use the iron sights promag $89.97 http://image.sportsmansguide.com/dimage/90149m2_ts.JPG?cell=300,300&cvt=jpeg
What mount you using for the M1A Marine ?
I have one with a brookfield mount and wanting to build another yet cash flow prohibits the buy of another original brookfield even if they can be found. Smith Enterprises is my plan. You have one that stays put I’d like to know the brand , model etc...
Mines an original one made by Springfield Armory, aluminum I think, with a nice heavy phosphate coating on it. I don't believe they make them any more.
I was looking at one of those titanium Sadlak jobs, but those things are really, really pricey.
There's a captive wave washer on mine that holds things nice and tight, at least for as much shooting as I do.
this is the one i'm using on my SOCOM, locks up tight too... and you can still use the iron sights promag $89.97 http://image.sportsmansguide.com/dimage/90149m2_ts.JPG?cell=300,300&cvt=jpeg