M21 Tactical Rifle The M21 Tactical rifle is the ultimate in auto-loading accuracy. In active duty with elite spec-ops groups world-wide, the M21 is the ultimate tool for the law enforcement sharpshooter. The M21 is equipped with an adjustable cheek piece stock, thus maintaining perfect head alignment with the scope. The M21 incorporates all of the finest features embodied in our M1A Super Match rifle. Accurate, reliable and powerful, the M21 rifle remains the world class standard for sustained precision fire.   SA9121 M21 Adjustable Walnut stock Caliber 7.62mm NATO (.308 Win.) Barrel 22", Twist: 1 turn in 10 inches, right hand, Douglas Premium air-gauged custom heavy match (Optional Hart stainless steel or Krieger barrels available on special order) Weight/Size (w/o scope) 11.6 pounds, Length: 44" long Mechanism Rotating bolt, gas operated, air cooled, semi-automatic magazine fed Sights Front National Match front blade .062 Sights Rear Match-grade hooded aperture with one-half minute adjustments for both windage and elevation. 26 3/4" sight radius Capacity 10 round box magazine Trigger Pull Specially tuned 4 1/2 pound crisp two-stage military match trigger *Rifles shown with optional pre-ban 20 round magazine and Harris bipod.