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VZ58 is the model of rifle. CZ858 is the Canadian civilian version by CZ. There are different variants and manufacturers of the vz58 model rifle.
Taken from Wiki: VZ58 Variants
vz. 58 P: Standard fixed stock.
vz. 58 V: Metal folding stock version for vehicle crew and airborne units.
vz. 58 Pi: Has a mounting interface for an infrared night vision NSP-2 sight, fixed stock, cone flash hider and folding bipod.
Automatická puška ("automatic rifle") AP-Z 67: Experimental 7.62×51mm NATO caliber version developed in 1966.
Útočná puška ("assault rifle") ÚP-Z 70: Experimental 5.56×45mm NATO version developed in 1970.
Experimentální zbraň ("experimental weapon") EZ-B: Experimental bullpup prototype developed in 1976.
Ruční kulomet ("light machine gun") codename KLEČ ("Mountain Pine"): Experimental variant with a 590 mm barrel (similar to RPK), developed in 1976.
Lehká odstřelovačská puška ("light sniper rifle") vz. 58/97: Experimental marksman rifle developed by VTÚVM Slavičín.
Samopal ("submachine gun") vz. 58/98 "Bulldog": 9×19mm Parabellum variant developed by VTÚVM Slavičín.
CZH 2003 Sport: Semi-automatic only variant for civilian consumption. Available with either a standard (390 mm) or shortened (295 mm) barrel. Limited production was made for the civilian market in Canada with an extended barrel length of (490 mm).
CZ 858 Tactical: A semi-automatic variant designed for the civilian market in Canada, assembled from unused parts from when production of the military versions ended. Available with standard (390 mm) barrel length on the restricted -4V version, or extended (482 mm) barrel length on the -2 version. The barrel is not chrome-lined in the -2 version unlike the military and -4V version. External components have a new varnish coat (identical to the coating used on original military rifles). A "Canadian" model is now also being offered based on the -2 version, featuring a real wood stock engraved with a maple leaf.
FSN Series: Newly manufactured civilian semi-automatic variants. Available in standard (FSN-01, 390 mm), with or without folding stock (FSN-01F and FSN-01W, which has a wooden stock and cheek piece), or shortened (279 mm) barrel lengths (also with folding stock), outer parts are blued. All variants with the exception of the -01W have bakelite stocks.
CSA vz. 58 Sporter: Available in .222 Remington, .223 Remington (5.56 NATO), or 7.62×39mm, these carbines were newly manufactured by Czech Small Arms, and not Česká zbrojovka. They came in Compact (190mm barrel, folding stock), Carbine (300 or 310mm barrel, folding stock), and Rifle (390 or 410mm barrel, fixed sporter stock) models. In addition there was a "Tactical" model chambered in .223 Remington, featuring a 410mm barrel, railed handguard, and collapsible buttstock. All featured synthetic handguards, although the 7.62x39mm Rifle model is available with either a synthetic or phenolic wood handguard.
Rimfire VZ 58: "Ogar 58" developed and manufactured by Highland Arms in Czech Republic, together with the cal. .22 LR conversion kit "Ogar 22). The conversion kit is intended for all calibers and variants of VZ 58.
