.300 BLK FNH SCAR Posted January 28, 2015 in Rifles, SHOT Show by Nicholas C with 41 CommentsTags: .300 aac blk, 300 BLK, FNH, SCAR, SCAR 16S Walking around SHOT Show, some things stand out and catch your eye. This all blue SCAR 16S stood out to me. At first glance I thought it was just custom Cerakoted SCAR. But upon looking closer, it is chambered in .300blk.