A self-adjusting liner assembly for a welding torch includes an elongated tubular body having a forward end, a rearward end, and a central bore extending from the forward end to the rearward end. An elongated fixed tube is mounted in the bore. The assembly further includes an elongated tubular slide having an inner end, an outer end, and a shoulder proximate the outer end. The fixed tube is received in the inner end of the slide, and the slide cooperates with the fixed tube in a telescoping relationship in the bore. A resilient member is disposed in the bore and envelopes a portion of the fixed tube and the slide. The resilient member engages the shoulder of the slide and urges the slide away from the fixed tube and toward the forward end of the body.