 The XP-100 was noted for its accuracy and is still viewed as competitive today in the sport of handgun varminting, which it helped create, as well as in metallic silhouette shooting.The XP-100 was based on Remington's short action bolt action carbine, the Remington Model 40X, which influenced the later Remington Model 600 rifle.The XP-100 was initially introduced with a barrel set into a nylon stock with an unusual center-mounted grip.