Frontier Tactical’s New FT-15 War Lock Rifle

Frontier Tactical FT-15 War Lock

Frontier Tactical announced the company was now offering a new AR-style rifle called the FT-15 War Lock Entry Carbine. This rifle uses the company’s War Lock multi-caliber system that allows for multiple barrels with a single upper receiver.

The standard carbine comes chambered in 5.56 NATO with a 16″ 1:8 barrel that is equipped with an A2 muzzle device. However, the front of the receiver has the War Lock device installed. Additionally, the ejection port is enlarged to handle larger calibers like the .458 SOCOM and .50 Beowulf.

The War Lock device replaces the standard barrel nut and allows for a new barrel (with hand guard) to be swapped out in seconds. Calibers requiring a new bolt can swap that out in the normal way. The below video shows a War Lock equipped gun being fired on the range. The shooter demonstrates several cartridge conversions including the 5.56 NATO, .300 BLK, 6.8 SPC and .458 SOCOM.

The guns are made in the United States and start with forged 7075-T6 aluminum receivers. Frontier Tactical uses a mil spec Type III hard coat finish. On the base gun, the company uses Magpul MOE furniture with a low profile gas block. Even though the War Lock system is significantly different than the typical AR, all other parts are mil spec compatible. In other words, it would be easy for you to trick yours out.

The suggested retail price of this gun is $1,200.

Richard Johnson

An advocate of gun proliferation zones, Richard is a long time shooter, former cop and internet entrepreneur. Among the many places he calls home is


  • Thamuze Ulfrsson

    Another AR15, gee-golly.

  • DetroitMan

    Cool engineering, but hardly anybody actually uses caliber conversion capability. Sure, you can change calibers easily, but then you have to go to the range and re-zero the rifle. That negates most of the ease of changing calibers.

    It’s far easier to just have another rifle in a different caliber. Everything stays zeroed and you just grab the rifle you want, no barrel change required. AR’s are not expensive, so it isn’t really cost prohibitive.

    What this would be great for is somebody who shoots a lot of competition and burns out barrels.

    • Sledgecrowbar

      Even then, even with steel-jacketed cheap Russian ammo burning up barrels in 5000 rounds, it’s still not worth it. Taking apart an AR upper is not difficult, I don’t care what free float rail you have. If you’re shooting long-distance competition and using up a $600 barrel with hot handloads at 1000 rounds, you’re still not shooting enough rounds every weekend to shorten the time it takes to go through one. I could rebuild an AR a handful of times every year and not get tired of it, I’d rather have an easier time zeroing sights every time.

  • TheNotoriousIUD

    KABOOM in 3…2…1…

    • Vhyrus

      Good point. Most people can’t keep their ammo straight when they have 2 completely different guns. Imagine running 5.56 and 300 on THE SAME GUN!

      Also, if you notice none of these handguards are the nice free float ones, so if you like your m-lok you can keep your m-lok… not.

      • TheNotoriousIUD

        It sounds good in theory but id never use all of those calibers.
        Maybe someone would.

        • Anonymoose

          I just want a gun that can change from 5.56 to .308 to 7.62×39 and back again…maybe add in some more flavors like .30-06, some Win Mags, and 7.62x54R (with Vepr mags) after that.

          • TheNotoriousIUD

            Sounds reasonable.

            It should also make smoothies.

          • Anonymoose

            And tactical lattes.

          • roguetechie

            Moose, technically the MGI military hydra can do anything between 22 lr and 7.62×51 if you buy the whole suite of
            magazine well adapters etc…

            They make, made, sell, and or have sold magwells for 9mm double stack double feed SMG mags, a grease gun .45 acp well, 5.45×39 ak74 well, 7.62×39 ak47 well, and 7.62×51 NATO well which uses modified m14 style mags or something…

            Additionally their QCB upper setup is probably the single best setups for people on a budget who really do intend to swap calibers often…. In other ways it six, I hate it, and there are days I want to lace up a pair of steel toe docs and methodically boot the entire gwinn clan in the junk one after the other … 3 generations of ruptured testicles in one fell swoop style!

            The good: no stupid expensive adapters, barrel nuts, extra handguards, or quick twist assemblies needed!

            All you need is a bbl assembly consisting of bbl, bbl extension, gas block, and gas tube …. That’s all! Nothing proprietary, which is mostly good except when its ****ing maddening!

            The Bad: stupid, dumb, evil, and I daresay morally repugnant quad rail forearm which the ingenious bbl locking mechanism and it’s slide over interlock device to prevent dolos like spontaneous involuntary bbl removal does handily… Unfortunately it’s like a lumpy undescended ball sack grafted at the base of your quad rail “shaft”

            This said, I admittedly own 3 hydras, 3 stanag magwells, 2 ak47 wells, some other wells i machined myself for odd calibers/interesting magazine choices, and a single ak74 well.

            I paid way too much as a relative early adopter for my first hydra, picked up two more in a sorta mini sales slump period where I got them cheap, and magazine wells were traded sold etc like baseball cards over the years.

          • Anonymoose

            I know about the Hydra and I think it’s a really cool concept. They still have not released the .308 version though, 5 years after they said they were going to. Unfortunately it seems like most of these “quick-change caliber” rifles fall flat on their face after the first year or two. Sure the SCAR is still going but at a ridiculous price for spare barrels, and the ACR has or had a pretty big modding community, but the SIG556xi and the Hydra have all but been forgotten. The MCX will probably suffer a similar fate, as will this War Lock thing. Everyone just finds it simpler to keep separate, dedicated uppers and/or rifles, I guess, even though I find the modular gun concept extremely appealing. I do hope MGI comes back too life and brings out a .308 magwell and an Mlok handguard though. They ought to make magwells to take G3 mags and FAL mags if they’re going to have to be rock-in anyway.

      • Friend

        That upper can take most AR15 FF handguards (IIRC they can’t have anti-rotation tabs), it’s a bit of a barrel nut that goes on before your barrel nut arrangement. So you actually can keep your M-lok, lol

  • Tinkerer

    War Lock rifle? With that name, it better include Fireball and Magic Missile among it’s calibers. Now if you’ll excuse me, I have to go wash the nerdness off me.

    • Vhyrus

      It doesn’t wash off, although I hear getting laid helps.

      • iksnilol

        What’s that?

      • Tinkerer

        YES IT DOES!! I only have to scrub REAL hard!
        And skin grows back, right? Right! ?

  • Sledgecrowbar

    Seems like a great takedown system if nothing else. Yes, you can just swap a new upper and yes, that retains zero, but an upper is still just a bit long for a backpack rifle in most cases (except large expedition packs or short barreled rifles). There’s something to be said for a takedown gun and the AR is finally getting some engineering love for adapting it.

    That said, I got my Pantheon Dolos setup for $150 on Black Friday. It’s about as easy to swap as this, although I don’t love how the barrel is loose in the collar until you tighten it down. This starts at $500 for a single setup. In their defense, they have one setup for clamshell handguards and one for free float, which the Dolos doesn’t, but I’m not concerned about that level of accuracy with this takedown system, I just want a gun that packs. This is priced so far above the competition, it doesn’t matter if it’s better.

    If someone comes out with a perfect quick-change takedown setup that’s back in the atmosphere at the $200-range, I’ll buy it.

  • 1LT Homer

    The AR market is definitely a saturated one, for better or worse. I would love to see retro guns of the 60s-80s brought back, but with modern technology. Imagine an AR180 that wouldn’t rattle itself loose weighing less than 5lbs, or an M1 carbine in a ballistically current cartridge with robust mags to feed. Maybe Ithaca makes the Stakeout from factory, or an H&K P7 in an alloy or cool chambering. Imagine the possibilities.