touch hole liner Yes, the Southern Mountain Rifle barrel comes with a stainless steel touch hole liner installed. Topics: Products_KitsTags: Southern|Touch Hole Liner|Touch Hole|BarrelLast verified: 2026-08-31Also called: southern mountain rifle, southern mountain, mountain rifle, southern, smr, touch hole liner, vent liner, hot spark liner, touch hole, touch-hole, touchhole, vent, vent hole, barrel