Try www.foxridgeoutfitters.com Ph. 1-800-243-4570. The product #A30408 @ 49.95, but ask if it will work on your Encore, I think it will my friend installed on on his System 1 last weekend, and I believe the instructions included the Encore, but you better make sure. You can call Thompson/Center Arms @ 603-332-2333 (don't bother E-mailing them you won't get a responce). Good luck.