The VICTRA-20 Modular Shotgun Suppressor is designed to be taken apart and configured to your desired length, ranging from the default of 10", down to 8", 6" and 4". The VICTRA-20 ships with the 10" Assembly Rods, so YHM has the set of 8", 6" & 4" for you to have full access to modifying your V-20 suppressor to any length you wish. The kit ships with a pair of each length. Re-configuring the suppressor to a smaller length will have an effect on weight as well as decibel rating. VICTRA-20 10" Configuration (OAL 10.4") - Weight 22 oz. - Ear average 132 dB VICTRA-20 4" Configuration (OAL 4.4") - Weight 12oz. - Ear average 138 dB YHM does not recommend using the 4" assembly rods with the VICTRA-12. Lengths: 8", 6", & 4" Material: 17-4 Stainless Steel Finish: Natural Stainless MADE IN U.S.A.