Remington's 40X rifle dates back to 1955, when the company introduced the original 40X match rifle in caliber .22 Long Rifle. These rifles, adapted from Remington's Model 722 action, quickly established a reputation for accuracy and reliability. Subsequent to the introduction of the Model 700, the 40X was introduced in other calibers for various specialized competition events, including bench rest, free rifle, and national match types. Calibers included the original .22 Long Rifle, .222 Remington, .223 Remington, and .308 Winchester, among others. The 40XS put the 40X into SWAT black and designated it as the 40XS Tactical Weapon System. Testing found that this rifle can compete with the best custom precision tactical rifles in terms of accuracy and reliability. Parts are thoroughly inspected prior to building the rifle. The personnel who assemble military and law enforcement rifles and shotguns are specially trained to perform only this type of assembly. They have no other jobs in the company. The 40XS can be ordered as a "bare bones" rifle with no sights or accessories or as a complete package. The basic rifle is a true custom firearm with features comparable to the finest rifles in the world. The bolt is trued in the action, and the headspace is set to match tolerances. Both action and 24-inch barrel are made of 416 stainless steel. The 40XS also comes with a Harris Model HLMB-S bipod with quick adjustable swivel lock. It has a Sunny Hill steel trigger guard. Blackhawk Industries' "Stalker" drag mat can be used as a carry case, a drag bag, an over-the-shoulder bag, and a shooting mat.