FN SCAR 20S 7.62 NATO Semi-Automatic Rifle – 20" Heavy Chrome-Lined Barrel, Geissele Two-Stage Trigger
The FN SCAR 20S is the civilian, semi-automatic counterpart to the USSOCOM-issued Mk 20 SSR. Chambered in 7.62×51 NATO, this rifle pairs a 20-inch heavy cold-hammer-forged barrel with a short-stroke gas piston system for reliable, cleaner operation. An extended monolithic top rail, Geissele Super SCAR two-stage match trigger, and fully adjustable non-folding stock make this platform ready for precision-oriented roles right out of the case.
Condition
Overall Condition: Good condition, showing some signs of prior use and handling.
Bore Condition: Good – Clean, well-maintained, minor wear marks.
Bore Rifling: Good Rifling – Intact, well-defined lands and grooves.
Minor, superficial scratches are present on the exterior finish but do not affect performance. The bore is bright and free of pitting.
What’s Included
- FN SCAR 20S rifle
- Two 20-round FN factory steel SCAR-17 pattern magazines
- Two 10-round FN factory steel SCAR-17 pattern magazines
The 20-inch heavy barrel is cold-hammer-forged from alloy steel, chrome-lined for longevity, and threaded 5/8-24 TPI. A factory muzzle brake is installed, and the thread pattern supports common 7.62-rated suppressors or aftermarket devices.
FN’s short-stroke gas piston system keeps fouling out of the receiver, reducing maintenance compared with direct-impingement 7.62 platforms. The user-swappable charging handle can be moved to either side to suit shooter preference.
The Geissele Super SCAR two-stage trigger offers a crisp, predictable break that helps maximize the rifle’s precision potential. Ambidextrous controls include the safety selector and magazine release, supporting left- or right-hand operation.
The non-folding stock features an adjustable comb, adjustable butt-pad, and a built-in length-of-pull ruler, allowing quick, repeatable shooter fit. A Hogue rubber grip with finger grooves enhances comfort during extended sessions.
The monolithic aluminum upper receiver provides a rigid mounting surface with a full-length top rail for optics, night-vision devices, or clip-on thermal sights. Compatibility with SCAR 17 magazines and accessories simplifies logistics for existing SCAR owners.