Orders placed after 4PM on weekdays will not ship until the next business day. Orders placed after 12pm Fridays will not ship until the following Monday.
Faster shipping methods may be available; just upgrade during checkout.
*Some exclusions apply.
Enter new zip code to refresh estimated delivery time.
The Thumb-Nut Flat Top Riser Rail from Weaver is a optical accessory used to add mounting height to an AR-style rifle by clamping to the flat top rail with two thumb screws. This Weaver rail is machined from aerospace aluminum and is well-suited for red dot sights or other optics.
Clamps to an AR-style flat top rail using the two included thumb screws