Browse our inventory of FN America / FN Herstal firearms, including the FN 509, FN SCAR 17S, FN SCAR 16S, FN 15, and FN PS90. Iron Horse Armory provides battle-proven FN America / FN Herstal firearms built on a legacy of military and law enforcement service, delivering uncompromising reliability, accuracy, and durability, serving sport shooters, defensive carriers, collectors, and tactical professionals who demand combat-tested performance from every platform they run. Explore our AR rifles, rifle stocks, and AR barrels to build out or upgrade your rifle setup. We also stock semi auto rifles, semi auto handguns, bolt action rifles, AR magazines, and scopes sights and optics to keep every shooter fully equipped with dependable gear and quality accessories.
Shop FN America and FN Herstal firearms online by comparing models, checking current availability, and reviewing specifications such as caliber, capacity, barrel length, and sight configuration.
Consider these tips to find the right FN platform for duty, sport shooting, hunting, or collection-grade ownership:
Buy FN America and FN Herstal firearms online or visit the gun shop in Parker, Colorado for hands-on time with the brand’s pistols, AR-platform rifles, and SCAR series. Iron Horse Armory proudly serves customers from nearby cities like Castle Rock, Franktown, Centennial, and Lone Tree, with experienced staff ready to walk through FN’s military-heritage product lines.
Federal law requires firearm purchases from a licensed dealer be processed through ATF Form 4473 with a NICS background check, with handgun buyers required to be at least 21 and long gun buyers at least 18. Colorado adds a state background check fee, a three-day waiting period on firearm transfers, and a magazine capacity limit of 15 rounds, which applies to most FN pistol and rifle magazines sold in state.
Carry concealed only with a valid Colorado Concealed Handgun Permit, and transport firearms unloaded and cased when traveling to and from the range. Store your FN in a locked safe, lockbox, or with a trigger lock when not in use to comply with Colorado’s secure storage laws, and contact the store directly with questions about specific FN models, NFA processing, or accessory compatibility.
FN Herstal is the parent company headquartered in Herstal, Belgium, with a firearms manufacturing history dating back to 1889. FN America is the U.S.-based subsidiary that designs, manufactures, and distributes FN-branded firearms domestically, including military contracts and civilian product lines.
FN is best known for producing battle rifles and machine guns including the FN FAL, M240, M249 SAW, and the M4 carbine under U.S. military contract. On the civilian side, the brand is recognized for the SCAR series, FN 15 AR rifles, and the Five-seveN pistol chambered in 5.7x28mm.
The SCAR 16S is chambered in 5.56 NATO, while the SCAR 17S and SCAR 20S are chambered in 7.62 NATO. The civilian SCAR 17S DMR and SCAR 20S precision variants offer extended barrels and enhanced trigger groups for long-range shooting.
FN firearms are legal to own in Colorado for adults who meet age requirements and pass a federal background check. Buyers must also comply with the 15-round magazine capacity limit and the three-day waiting period on firearm transfers.
Yes, FN 15 rifles are built to military specifications using cold hammer-forged, chrome-lined barrels and the same component standards FN uses on its M4 and M16 military contracts. This makes them a popular choice among shooters who want a duty-grade AR-15 platform.
The Five-seveN is a polymer-framed, hammer-fired pistol chambered in 5.7x28mm, the same cartridge used in the FN P90 personal defense weapon. It features a 20-round capacity in standard configuration and is known for low recoil, flat trajectory, and lightweight design.
Many current FN pistols, including the FN 509 MRD-LE, FN 545 Tactical, FN 510 Tactical, and FN Reflex, are offered in optics-ready configurations with milled slides and FN’s Low-Profile Optics Mounting System. This system uses adapter plates to support a wide range of red dot footprints.
Field-strip the firearm and clean the bore, bolt carrier or slide, and gas system using quality solvent and lubricant per the owner’s manual. Periodically inspect recoil springs, gas piston components on SCAR and piston-driven platforms, and optic mounting hardware to maintain long-term reliability.
