It's a 16" flat-top with chopped off Front sight block, M4 profile, and chrome-lined, standard handguards. Accuracy is ok: about 1.75" 5-shot groups with American Eagle 50gr. Varmint tips. I want a lightweight rifle for walking, shooting coyotes, and shooting groundhogs, also some bench-top shooting. 200-250 yards would be my max hunting range. I have a RRA 2-stage varmint trigger, and a Weaver Super Slam 2-10x50. I want to keep and use these parts on this setup. I'm thinking about putting on a 7" free-float tube with a single stud, and changing the gas block to eliminate the dangling sling attachment. I'm hoping that I can get my group sizes down 1/4"-1/2" with the free-floating, and better rest (bi-pod). The main reason is a 3.5" pattern at 200 yards seems too big for groundhog shooting. Part of the group size could well be the 10x optics - maybe more X's = smaller groups... instead of spending $80 for a basic float tube/sling stud and $45 for a gas block, would I be better off selling my upper and buying something different?