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  1. Just picked up a new FDE 17s, think I have an issue with piston and BCG

    FN SCAR 17S
    Hello, I just picked up the 17s a few days ago, took it apart to clean the parts of the factory oil/grease and noticed an odd mark on the piston I will post a link to an album that has pictures of the mark. The mark i am referring to is that little blotch on the bottom left of the pin in the...