The Specna Arms EDGE rotary-style hop-up unit for the AR15 (M4/M16) series is made from durable, rigid polymer. The polymer construction helps prevent the hop-up rubber from freezing in cold conditions and performs reliably in both rainy autumn weather and summer temperatures.
The hop-up adjustment is made via a large dial aligned with the barrel. The adjustment dial maintains its setting precisely thanks to a dedicated locking ring.
Original Specna Arms spare part.
