Does anyone have any experience with ARs that have polymer receivers, whether upper, lower, or both? Examples that come to mind are the Tennessee Arms polymer lowers, or the Windham Weaponry SRC complete carbine. I’m sure there are many fine companies that have simply slipped my mind. If you have one of these rifles and love it, or used to have one and hated it, please let me know. Heck, if you’ve ever just shot one at a range and it belonged to someone else, do let me know your impressions. Thank you guys, I appreciate all your future feedback.