FN America FN 15 Patrol Carbine M-LOK 5.56 NATO 16 in Semi-Auto Rifle
This FN 15 Patrol Carbine M-LOK is a direct-impingement 5.56 NATO AR-15 with a 16-inch 4150 CMV barrel, chrome-plated bore and chamber, and a 1:7 twist. It features a carbine-length gas system, left-side safety, and a collapsible six-position stock on a VLTOR RE-1 receiver extension. The rifle comes with its factory-labeled box and was the model selected by the South Carolina Department of Public Safety for duty use in 2019.
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 Notes: Minor, superficial scratches and blemishes are present on exterior surfaces.
What’s Included
- Factory FN America box with FN15 Patrol Carbine M-LOK label
- Manual
- Sling
- Bipod (not installed)
- 1x Magpul PMAG 30 polymer magazine (5.56x45)
The 16-inch barrel is made from 4150 CMV steel and features a chrome-plated bore and chamber with button rifling and a 1:7 twist, giving it the durability and spec profile buyers expect from an FN-duty pattern carbine. The barrel is threaded and fitted with an aftermarket open three-prong flash hider.
The carbine-length gas system pairs with a two-piece polymer carbine-length MOE M-LOK handguard. Controls include a left-side safety selector and a six-position collapsible stock mounted on a VLTOR RE-1 receiver extension.
Sighting is handled by a fixed A2-pattern front sight base with bayonet lug and front sling swivel, matched to a polymer flip-up rear aperture. The upper receiver includes a T-marked Picatinny rail, forward assist, and dust cover.
Factory markings include the FN oval rollmark and FN COLUMBIA SC rollmark, with the barrel marked 'B MP 5.56 NATO 1/7'. The case label denotes 'FN15 Patrol Carbine M-LOK' and matches the rifle configuration. This model was selected by the South Carolina Department of Public Safety for duty use in 2019.




