Sako TRG 22/42 I.T.R.S. (Integrated Tactical Rail System) Accessory Rail.
Aluminum construction - attachment platform for the Sako TRG22/42 system. Made up of three MILSTD-1913 Picatinny rails attaches around the rifle barrel. Installing this system allows the use of different tactical accessories.
Standard Picatinny or Weaver mounts can be used.