FS is a top-of-the-line Huber Concepts, Staged-Break trigger for the Remington 700 and clones. It is a 2-stage, stainless steel, right hand safety set at 2lbs. I used this in my Mausingfield in a JAE chassis with no issues and loved it! I moved to an AI in 2017, so this Huber is excess. This was a $400 trigger - sell for shipped and insured. PayPal okay, but friends and family (no fee) and absolutely no mention of a firearms part. I'll throw in the trigger / retention pins if I find them.