I bought this a couple of years ago and fitted it to my 106FR, but chickened out when it came to modifying the trunnion.
I had to do a bit of filing to get it to fit, resulting in a small notch near the magazine release button. This is minor and cosmetic only.
The magazine is a 20 rounder and appears to be teflon with a green follower. It is marked Kesselring.com.
$110 shipped CONUS or trade for Circle 10 .223 mags.
Tom
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