FN 15 Tactical Carbine II 5.56 NATO — 16 in CHF Chrome-Lined Barrel, Mid-Length Gas, Free-Float M-LOK, Excellent Condition
The FN 15 Tactical Carbine II pairs FN's cold hammer-forged, chrome-lined 16-inch barrel with a mid-length gas system and a free-float Wedge Lock M-LOK handguard. This rifle comes with polymer flip-up sights installed, a Magpul PMAG, and MOE SL furniture. It is in excellent condition with only faint signs of prior handling.
Built on an AR-15 platform, this carbine uses a direct impingement action and an H buffer for smooth cycling. The 1:7 twist rate supports a broad range of 5.56 NATO loads, and the 1/2x28 threaded muzzle wears FN's three-prong flash hider. The barrel is MP inspected and marked "MP 5.56 NATO 1/7."
The upper receiver features a flat-top Picatinny rail with T-marked positions (T2–T12), a forward assist, and an ejection-port cover. The 13.625-inch FN Wedge Lock free-float handguard is aluminum, M-LOK compatible, and marked FNH USA.
Furniture includes a Magpul MOE SL 6-position collapsible stock and a MOE pistol grip. The rifle ships with polymer flip-up front and rear sights installed and a 30-round Magpul PMAG. Approximate overall length is 34.0–37.25 inches, with a weight around 6.98 lb. Standard capacity is 30+1 with STANAG pattern magazines.
Made in the United States, this FN 15 Tactical Carbine II brings together FN's barrel quality, a pinned low-profile gas block on a mid-length system, and a clean, free-floated setup for practical performance and reliability.
Condition
Overall Condition: Excellent condition, showing only faint signs of any prior use or handling.
Bore Overall Condition: Excellent - Clean, mirror finish, no signs of wear.
Bore Rifling: Excellent Rifling - Sharp lands and grooves.
Specific Condition Notes: There are minimal handling marks from prior use. Please refer to the photos for additional details.
What's Included
- Polymer flip-up front and rear sights (installed)
- 1x 30-round Magpul PMAG polymer magazine
The 16-inch 4140 alloy steel barrel is cold hammer-forged, chrome-lined, and MP inspected for durability and consistency. The 1:7 twist rate is well-suited for common 5.56 NATO bullet weights, and the 1/2x28 threads accept the included FN three-prong flash hider.
A mid-length gas system with a pinned low-profile gas block promotes balanced operation. The H buffer further contributes to controlled recoil and reliable cycling under varied conditions.
The free-float FN Wedge Lock M-LOK handguard measures 13.625 inches and is constructed from aluminum. It provides robust mounting real estate while keeping weight in check, and it carries FNH USA markings.
The flat-top upper includes a T-marked Picatinny rail, forward assist, and ejection-port cover. Magpul MOE SL stock (6-position) and MOE grip provide a solid, modern furniture set. Overall length is approximately 34.0–37.25 inches, with a weight of about 6.98 lb.




