PTR Industries PTR-91 A3SK, Semi-automatic Rifle, 308 Win, 16 Tapered Barrel, Black, Fixed Stock, 1 Magazine, 10Rd, Slim Handguard, Welded Scope Mount, Removable 5/8X24 Flash Hider, Paddle Mag Release, California Compliant Grip PTR410 A3SK Model, 16" barrel with a slim black handguard and stock with a welded scope mount. California configuration which includes a polymer 10-round magazine.