This rifle sling is designed for rifles made useing a rear button attachment and a front 1 1/4" wide swivel as European rifles were made in the early flintlock era. Usually found on short Jaeger style rifles . Strap measure 40" at its longest length. Measure your distance between the front swivel and the rear button and add 10". This distance should be no more than 40". If it is we will make a custom length to fit your rifle. Call on custom lengths.