Here's your answer:
http://www.csmcspecials.com/SearchResults.asp?Search=Gamekeeper+slip-on+pad&Submit=SearchI've been using them, as well as the Galco brand for years. They do a yeoman's job of protecting the skeleton butt area as well as ~4" up the sides of the stock. They add 5/8" to the length of pull - if you need/want more just cut and fit some foam material and slip it in. Because of their design and availability of various sizes they can offer a fit that allows the flap to completely cover the velcro - there are competitors out there that sell similar slip-on pads, but many of them allow the velcro to show when installed - and that, to my eye, is ugly, unappealing and out of character to the attractiveness and aesthetics of a Parker Reproduction.
