There's one for sale at gunbroker.com. The item # is 23510684. I think it was made by ArmiSport. The basic style of rifle has been around for 30 or 40 years and is available in plain form for maybe $275.00. The $300.00
and higher premium that is often asked for the Charlton Heston version seems a tad excessive for a few lines of engraving. I believe they made close to a thousand of them and they pop up on the on-line auctions at regular intervals--at varying asking prices.