"........Geez, - that's right, cap pistols, never knew there was a "cap" rifle. ..........."
The Mattel "Plainsman" set I had came with a 6 shot Colt .45 revolver in a real suade leather holster with scabard and plastic knife, and a lever action Winchester. Both fired stick-on caps. It was the "Shootin' Shell" 45 in the first page and a lever action similar to the one on the third page of SUPPERFITTER's link.
They shot out plastic "bullets" that fit into spring loaded shell casings. After inserting the plastic bullet, you'd peal off and stick "Greeny Stik - M caps" on the base of each shell. The Colt had a flip open loading gate and the Winchester had a loading port to the magazine, both worked like the real ones.
After dinner, I'd strap on the holster, load up the Colt and the Winchester then watch shows like Davey Crockett, Gun Smoke, Suger Foot, Branded, Palladin, Bonanza. There were planty of Cowboy shows on back then and every time a bad guy showed up, that TV screen got peppered with plastic bullets almost every night of the week !
Great times !!!!
Paul.