Poor choice of words or the use of them by me. My other HVA sr is stamped on the barrel High Standard model H-100 both have the same barrels length and contour. Somebody in the past removed the ramp frt sight off the 51-l but the rear sight is in place but taller than the one on the h-100. The 51-l has a monte carlo sporter stock with checkering where as the h-100 has straight stock no checkering. I imagine there were other HVA sr action used on other brands maybe. Be my guess both have exactly the same barrels by High Standard I believe they were chrome lined? Mb
