Nodak spud front sight Allow 10/22A(R) to have similar sight picture to military type rifles such as the AR-15/M16 Works with standard 10/22A(R) barrels Uses SKS post secured w/ two 10-32 nylon tipped set screws Has wide range of elevation adjustment Works with a variety of receiver mounted 10/22A(R) sights Requires a SKS/AK style sight adjustment tool for elevation adjustment Use with RugerA(R) 10/22A(R) Rear Sight w/Rail Mfg: Nodak Spud Llc