FN SCAR 20S 7.62x51 NATO Semi-Auto Rifle, 20 in Heavy Barrel, Geissele Trigger, Matte Black
This FN America SCAR 20S stands out with a 20-inch heavy, magnetic particle inspected barrel chambered in 7.62x51 NATO, an upgraded Geissele trigger, and a precision-adjustable stock. It features an adjustable gas system, a continuous numbered MIL-STD-1913 top rail, and comes with seven magazines. Factory markings and a matte black finish round out a well-configured, full-size SCAR variant.
Condition
Overall Condition: Very good condition, showing only light, superficial signs of prior handling or use.
Bore Overall Condition: Excellent - Clean, mirror finish, no signs of wear.
Bore Rifling: Excellent Rifling - Sharp lands and grooves.
Specific Condition Details: There are minimal markings from previous handling and signs of use. The bore is bright and clean. Refer to pictures.
What’s Included
- FN SCAR 20S 7.62x51 NATO rifle with upgraded Geissele trigger
- Six 20-round polymer magazines marked "AMEND2 x KDG KR2-20 7.62x51"
- One 10-round metal-pattern magazine
The 20-inch heavy-profile barrel is marked "MP FN 7.62 x 51MM 1:10" and pairs with an adjustable gas system at the gas block. A SureFire-marked two-port muzzle brake/adapter with NSN text is installed to help manage recoil and muzzle movement.
The receiver is aluminum with a matte black finish and carries factory markings including the FN oval logo, a 2D matrix mark, and "FN COLUMBIA, SC USA." It is marked "SCAR 20S MULTI-CALIBER" and features a continuous, numbered MIL-STD-1913 top rail with T-marks 1–55.
The fore-end provides additional Picatinny rails at 3, 6, and 9 o'clock for accessory placement. A left-side reciprocating charging handle supports positive manipulation, and the two-position safety selector is marked "S" and "1."
The fixed precision stock includes an adjustable cheek riser and adjustable buttpad, with length-of-pull adjustability (13.25 inches as configured). A Hogue pistol grip with finger grooves enhances control. The short-stroke gas piston action delivers semi-automatic operation with a 20+1 capacity when using 20-round magazines.
This example includes an upgraded Geissele trigger for a refined trigger pull, complementing the platform’s precision-focused configuration and control layout.



