5.56x45mm NATO

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FT-15 FS 2FT-15 FS 2

FT-15

$1,137.50$2,018.50

***A Federal Firearms License (FFL) is required to purchase this item.***

The FT-15 comes standard with a 16″ 5.56/.223 barrel, with 1/8 twist and A2 compensator.  We’ve included black Magpul MOE furniture, low profile gas block, and mil-spec parts.  Our FT-15 was designed with the capability to quickly retrofit with the War Lock™ Multiple Caliber System.

Our FT-15 comes with the Frontier Tactical™ War Lock™ Multiple Caliber System installed from the factory.  No additional assembly is required.

Every AR-15 is capable of becoming a multiple caliber platform.  For that reason, every AR pistol and rifle we sell comes from the factory with three important multiple caliber upgrades:

  • The lower receiver is marked “MULTI CAL” for all AR-15 cartridges.
  • Our upper receivers come from the factory with enlarged ejection ports for future use of big bore cartridges (.450 Bushmaster, .458 SOCOM, .50 Beowulf).
  • Our lower receivers come with a Wolff Extra Power Hammer Spring installed for harder military primers (e.g., 5.45x39mm, 7.62x39mm, etc).

Please select your caliber, stock and handguard preferences.

FTP-15 WLLTFTP-15 WLLT 2

FTP-15

$1,137.50$1,978.50

***A Federal Firearms License (FFL) is required to purchase this item.***

The Frontier Tactical™ FTP-15 comes standard with a 10.5″ 5.56/.223 barrel, with 1/7 twist and A2 compensator.  We’ve included black Magpul MOE furniture (not shown – pistol grip), low profile gas block, and mil-spec parts. Our upper receivers come from the factory with enlarged ejection ports for future use of big bore cartridges (.450 Bushmaster, .458 SOCOM, .50 Beowulf).

Every AR-15 is capable of becoming a multiple caliber platform.  For that reason, every AR pistol and rifle we sell comes from the factory with three important multiple caliber upgrades:

  • The lower receiver is marked “MULTI CAL” for all AR-15 cartridges.
  • Our upper receivers come from the factory with enlarged ejection ports for future use of big bore cartridges (.450 Bushmaster, .458 SOCOM, .50 Beowulf).
  • Our lower receivers come with a Wolff Extra Power Hammer Spring installed for harder military primers (e.g., 5.45x39mm, 7.62x39mm, etc).

Please select your caliber, stock and handguard preferences.

War Lock Barrel Assembly-Carbine Length-MagpulWar Lock Barrel Assembly-Carbine Length 2

War Lock Barrel Assembly-Carbine Length

$449.50$843.50

War Lock Barrel Assembly-Carbine Length. The War Lock™ forges your AR into a Multiple Caliber System.  It replaces the traditional barrel nut and enables the quick installation and removal of War Lock™ equipped barrel assemblies.  The War Lock Barrel Assembly-Carbine Length is a completely assembled and tested component ready to use with the War Lock Upper Receiver. Each Barrel Assembly is available in different gas lengths, calibers, barrel lengths, and with many different accessory combinations. Includes low profile gas block, A2 style flash suppressor and Transportation/Storage Cap. Available in Black, Flat Dark Earth, Olive Drab Green and Gray. Made in the U.S.A.

**Does not come with bolt or bolt carrier group** – Available for separate purchase.

War Lock Barrel Assembly-Pistol Length-MagpulWar Lock Barrel Assembly-Pistol Length 2

War Lock Barrel Assembly-Pistol Length

$475.50$601.50

War Lock Barrel Assembly-Pistol Length-Magpul. The War Lock™ forges your AR into a Multiple Caliber System.  It replaces the traditional barrel nut and enables the quick installation and removal of War Lock™ equipped barrel assemblies.  The War Lock Barrel Assembly-Pistol Length is a completely assembled and tested component ready to use with the War Lock Upper Receiver. Each Barrel Assembly is available in different gas lengths, calibers, barrel lengths, and with many different accessory combinations. Includes low profile gas block, A2 style flash suppressor and Transportation/Storage Cap. Made in the U.S.A.

**Does not come with bolt or bolt carrier group** – Available for separate purchase.

War Lock Complete Upper Receiver 2War Lock Complete Upper Receiver

War Lock Complete Upper Receiver

$329.00

War Lock Complete Upper Receiver. The standard AR platform can already fire over 90 calibers, but requires either a dedicated upper receiver for each barrel, or the labor intensive removal and installation of a barrel. The War Lock™ Complete Upper Receiver was created to remove the time and labor required for the customer to install the War Lock Kit on their own AR15 upper receiver. Our upper receivers come with an enlarged ejection port to accommodate calibers up to, and including .50 Beowulf. Hard-coat anodized aluminum with M4 feed ramps. Made in the U.S.A.

NOTE – The War Lock™ Complete Upper Receiver does not come with a Barrel Adapter Assembly, Installation Fixture, Transportation/Storage Cap or Handguard Retainer Assembly.  This product also does not include a Charging Handle or BCG.

War Lock Upgrade KitWar Lock Upgrade Kit

War Lock Upgrade Kit

$299.00

Imagine….one rifle for most calibers!

The War Lock™ transforms your AR platform into the Multiple Caliber System. The AR platform can fire over 90 calibers in its stock configuration. With the War Lock™, the operator can select different calibers without the need for dedicated upper receivers for each barrel assembly.  Transition between your shooting options with ease. The safe and reliable multiple caliber AR-15 solution to your selective shooting style.

War Lock™ Highlights:

Fast caliber changes – New storage capabilities – Easier to transport – More effective access for cleaning – Intuitive accessory combinations – Quick assembly and disassembly – Durable materials for lifetime use – Ergonomic design – Modular system

NOTE: Our products are made to order! Due to the launch popularity of our flagship product, please allow up to 30 days for your order to be delivered.

Complete Bolt Carrier GroupComplete Bolt Carrier Group

Complete Bolt Carrier Group

$210.00

Complete Bolt Carrier Group. The War Lock™ forges your AR into a Multiple Caliber System.  It replaces the traditional barrel nut and enables the quick installation and removal of War Lock™ equipped barrel assemblies.  The Complete Bolt Carrier Group is a completely assembled and tested bolt carrier group, that is ready to use with the War Lock Upper Receiver and compatible barrel.

Do not mix bolts and barrels from other manufacturers.  Our bolts are designed to run with our complete barrel assemblies.

Made in the U.S.A.

Barrel Adapter Assembly KitBarrel Adapter Assembly Kit

Barrel Adapter Assembly Kit

$99.00

War Lock™ Barrel Adapter Assembly Kit

The War Lock™ is designed to interlock with the Barrel Adapter Assembly. Each barrel system can be customized to the individual choice of the shooter. Switch between barrels and select for any of these:

  • Different rifle or pistol calibers (All NFA rules apply)
  • Varying twist rates
  • Longer or shorter lengths (All NFA rules apply)
  • Diverse options in finish or fluting
  • Rapid choice of muzzle device or suppressors (All NFA rules apply)

Take a moment to realize the true capability of a Modular AR-15 platform. Create individual barrel systems for every caliber or load without spending all your money. Be prepared to shoot any ammunition that is available, instead of getting caught short in a panic buy.

NOTE: Our products are made to order! Due to the launch popularity of our flagship product, please allow up to 30 days for your order to be delivered.

Installation FixtureInstallation Fixture

Installation Fixture

$48.00

Installation Fixture

Installation Fixture. The War Lock™ forges your AR into a Multiple Caliber System. It replaces the traditional barrel nut and enables the quick installation and removal of War Lock™ equipped barrel assemblies. The Installation Fixture is used for the installation of the Barrel Adapter Assembly and for the installation of muzzle devices; which prevents potential damage to the upper receiver. One Installation Fixture is included with each War Lock™ Multiple Caliber System Retrofit Kit. The Installation Fixture is also used as a GO/NO GO gauge for checking the proper installation of the Barrel Adapter Assembly. Made in the U.S.A.

Transportation and Storage CapTransportation and Storage Cap

Transportation and Storage Cap

$27.00

Transportation and Storage Cap.

Transportation and Storage Cap. The War Lock™ forges your AR into a Multiple Caliber System. It replaces the traditional barrel nut and enables the quick installation and removal of War Lock™ equipped barrel assemblies. The Transportation and Storage Cap is used to prevent potential damage to the gas tube of complete barrel assemblies. One Transportation and Storage Cap is included with each War Lock™ Multiple Caliber System Retrofit Kit, complete barrel assemblies, and each Barrel Adapter Assembly AR15 Adapter Kit. Made in the U.S.A.

Handguard Retainer AssemblyHandguard Retainer Assembly

Handguard Retainer Assembly

$22.00

Handguard Retainer Assembly.

The War Lock™ forges your AR into a Multiple Caliber System. It replaces the traditional barrel nut and enables the quick installation and removal of War Lock™ equipped barrel assemblies. The Handguard Retainer Assembly is used for two piece drop in handguards. One Handguard Retainer Assembly is included with each War Lock™ Multiple Caliber System Retrofit Kit. Each additional Handguard Retainer Assembly is purchased by adding this item to the shopping cart. Black anodized aluminum with black oxide bolts for high strength and corrosion resistance. Made in the U.S.A.