The Specna Arms Hop-Up TDC Magnus™ rotary chamber is equipped with the innovative Helium™ Flat Hop rubber, which is specially designed for M4/M16 replicas. This modern chamber, part of the Specna Arms Prime™ product range, is equipped with a patented Top Down Centre design, which ensures precise and stable adjustment (protected by European patent number 015052069-0001). The kit also includes a silicone Helium™ Flat Hop rubber and special spacers.
