The CZ-550 rifle is available in two basic variants. These variants technically differ in the size (length and other dimensions) of the action. These variants are offered in several versions. STANDARD This is the basic version of this rifle series. Available in .243 Winchester and .308 Winchester with a 4-round detachable magazine or .308 Winchester, 7×64mm and .30-06 Springfield with a 4-round fixed magazine. , with a two-position safety, adjustable set trigger, open sights, ventilated rubber butt plate, and 1 inch sling swivels. It is mounted in a PUR lacquer stock with a semi-matte finish. The STANDARD weighs is long and has a barrel. SCANDINAVIA The same rifle as the STANDARD version, with the addition of a Monte Carlo type walnut stock with a raised comb provided with checkerings and a rubber decelarator buttplate. The chambering palette is .243 Winchester, .270 Winchester, .308 Winchester, 7×64mm, 6.5×55mm and .30-06 Springfield with a 4-round fixed magazine. LUX The same rifle as the STANDARD version, with the addition of a Bavarian cheek piece. The chambering palette is .243 Winchester, .308 Winchester and .22-250 Remington with a 4-round detachable magazine or .243 Winchester, .270 Winchester, .308 Winchester, 7×64mm, 6.5×55mm, .30-06 Springfield and 8×57mm IS with a 5-round fixed magazine. MEDIUM LUX The same rifle as the LUX version chambered for larger cartridges. The chambering palette is .300 Winchester Magnum with a 3-round detachable magazine or .300 Winchester Magnum, 7 mm Remington Magnum or 9.3×62mm with a 3-round fixed magazine. AMERICAN This rifle features a classic American pattern stock with reduced drop at heel, 18 LPI checkering, sporter weight hammer forged barrel and a single-set trigger. There is also a Kevlar reinforced polymer stock available. This rifle is designed for aiming with optical sights only. The CZ 550 American is supplied with 1” steel scope rings. The chambering pallet is .243 Winchester, .308 Winchester and .22-250 Remington with a 4-round detachable magazine (a limited run in 300 WSM was also available) or .270 Winchester, 6.5×55mm, .30-06 Springfield and 9.3×62mm with a 5-round fixed magazine.