10 x 4 Oval, 16" Length, 2.5" Bore, Special Silencer (OOCHSE) 100558

10 x 4 Oval, 16" Length, 2.5" Bore, Special Silencer (OOCHSE). A "special" configuration refers to a silencer that is somehow distinct from the others on our list, usually by virtue of being side entry or having a special chamber inside.