Cooper Arms Model 21 Western Classic in 243 Winchester. The Western Classic stock features an AAA Claro walnut stock with western fleur checkering and case-color metalwork, making it the most visually distinguished variant in the Cooper line. In 243 Win, the Model 21 serves dual duty as a varmint rifle and deer rifle, capable of shooting sub-MOA groups at varmint weights and delivering enough energy for deer-sized game with heavier projectiles. Type: Rifle Action: Bolt-Action Caliber: 243 Winchester Capacity: 1 Year introduced: 1991, USA Weight: 60 oz Overall length: 41.5" Status: Active Intended use: hunting, varmint hunting