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Discussion Starter · #1 ·
If I mount optics on a tri-rail or a standard PS90 that has the sight removed and a rail such as that manufactured by Magazine Parts installed on it what will be the difference in cheek weld? I saw one post awhile back where the person said that he needed to use a chin weld with the modified PS90. Is there that much difference in height that it would significantly affect the cheek weld? Any comments from users who have used both systems would be greatly appreciated
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