M058 were combos available in 20 ga. with .30-30, .22 Rem. Jet, .22 Hornet, .357 Mag., or .44 Mag, discontinued in 1985.
M158 had a bunch of different variations.
Model 158 Rifle
- 20 ga. shotgun barrel was dropped and model became rifle only in .22 Hornet or .30-30 Win. cal. Mfg. 1976-1984.
Model 158 Topper 30/Topper Jet
- .22 S&W Jet or .30-30 Win. cal., side lever break action, 22 in. blue barrel, case colored hardened frame, drilled and tapped, walnut stained hardwood pistol grip stock, blade front sight, folding rear sight, 6 1/2 lbs. Mfg. 1963.
Model 158 Topper 4 in 1
- standard with 4-barrels in .30-30 Win., .22 Jet, 20 ga. (mod. choke) and .410 bore (full choke). Mfg. 1964-1967.
Model 158 Topper Combo
- standard with 2 barrels in .22 Jet (1968-1975), .22 Hornet (mfg. 1975), .30-30 Win., and 20 ga., straight grip stock. Mfg. 1968-1975.
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