MSAR STG-556 Optics Rail
MSAR STG-556 Optics Rail
I recently acquired an MSAR STG-556. It is chambered in 5.56 NATO 1/8 twist with a 16" barrel. The one I got was a flat top with a 1913 Picatinny rail. It came with a BSA RD30 red dot sight that had a flush mounting ...
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