Tomorrow War Rifle: Blaster Build Breakdown By: Travis Pike

In this edition of Build Breakdown, we’re taking a closer look at the futuristic (and often ridiculed) rifle from The Tomorrow War, Amazon’s action sci-fi flick starring Chris Pratt.

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The movie leans hard into its premise: in the near future, humanity is getting wiped out by an alien threat. With no other option, scientists invent time travel and start drafting people from the past to fight in the future. Chris Pratt plays Dan Forester, a former Green Beret who gets called up and shipped off to 2051.

Before deploying, Dan and the other draftees are issued a rifle called the MK III. Their survival rate? Just 30%.

And considering how little training they’re given before jumping into combat, that number starts to make a lot of sense.

You need more than a day at the range to become an effective soldier, of course, but that’s all the draftees get.

The following will show you what accessories you’ll need to clone the rifles carried by Forester’s comrades.

We’ll also walk you through Dan’s actual rifle, but it’s just a little bit different than the others.

• Parts list
• Build breakdown
• What I’d change

Also, don’t forget!

The shotgun carried by Forester’s comrade Dorian is the same one used by Ben Edwards (Taylor Kitsch) in The Terminal List. It just has different furniture on it.

1. BCM Receivers		Impeccable pedigree Superb QC Difficult to find	Check price
2. 8-inch barrel		Not ideal for 5.56 Better suited for 300BLK Ballistic Advantage makes great barrels	Check price
3. V-Seven Helios		Linear compensator = more comfort with SBR Titanium build Worth the investment on any long gun	Check price
4. 7-in. BCM handguards		Various sizes available Multiple rail types available BCM…again, good quality stuff	Check price
5. Hera CQR foregrip		Interesting look More form than function, but has its place	Check price
6. Hera CQR Buttstock		Fixed stock but has spacers Strange grip, but looks cool More form than function, but has its place	Check price
7. Trijicon 4×32 ACOG		Intuitive and rugged Battlefield proven many times over Solar powered illuminated reticle	Check price
8. Trijicon SRO		Good choice for offset RDS on a long gun Evolution of the excellent RMR Complements the ACOG very well	Check price
9. Inforce WML		Extremely light Only 400 lumens Intuitive and functional	Check price

Unlike the Terminal List Beretta 1301, the Tomorrow War Rifle did not begin as one complete firearm. It started with matching BCM receiver sets – so that’s where we will begin too.

The Receivers: Bravo Company Manufacturing

The big white BCM stamp on the upper receiver makes this a dead giveaway. BCM makes high-quality gear with unbeatable quality assurance. They produce a variety of rifles, parts, and pieces. Using a BCM upper and lower for your build is mandatory, as any standard MIL-SPEC upper and lower will work. BCM doesn’t produce stripped lowers often though, so it might be difficult to go BCM at all.

However, in 2051 maybe they’ve seen the light and now produce all the stripped uppers and lowers necessary to arm a military force. 

BCM Upper Receiver

BCM Lower Receiver

Barrel: 8-Inch 5.56 Barrel

BCM doesn’t produce an 8-inch barrel, so this isn’t a BCM product. Tons and tons of companies market and sell AR-15 barrels. Barrel lengths are pretty standardized, and 8-inch is somewhat unusual. Ballistic Advantage does sell an 8-inch barrel, and they produce some very nice barrels at an affordable price point. So we’ll pick that.

While an 8-inch barrel does produce a cool-looking, short carbine, it’s not the most efficient barrel length for a 5.56 caliber rifle. In 2051, maybe we’ve designed a new intermediate rifle round that works well from short barrels. It’s not out of the realm of possibility.

The 5.56, however, is designed for a 20-inch barrel. You lose performance as you go shorter and shorter. At 8 inches, you are getting a very loud and concussive rifle with a projectile that’s not reaching 2,500 feet per second. Wait until you see the muzzle flash it creates!

MK IV Note – The MK IV version appears to use a 14.5 or 16-inch barrel. With the 16-inch variant, you can create a rifle that doesn’t have you messing with the NFA.

Muzzle Device: V-Seven Systems Helios

At the end of the MK III sits a tubular muzzle device that isn’t quite long enough to be a suppressor. That’s actually a linear compensator. A linear compensator directs muzzle blast forward and away from the shooter.

This makes using short-barreled weapons much more comfortable. A 5.56 caliber gun using an 8-inch barrel is certainly one to make good use of a linear compensator, particularly in a fight in close quarters. It makes shooting much for comfortable not only for the shooter but for everyone around them.

V Seven Systems makes outstanding products, and the Helios is probably the fanciest linear compensator on the market. The Helios is made from titanium, which is extremely strong and will easily tolerate the blast of a short-barreled 5.56. It’s a very practical choice for such a short rifle.

The Rails: BCM Handguards

The MK III wears what appears to be a 7-inch rail, judging by how much of the barrel extends beyond the rail…but what kind?

BCM handguards outfit the upper receiver, but it’s tough to tell if they are M-LOK or Keymod. BCM produces Keymod and M-LOK, but the MK III rifles feature rail covers hiding those slots. Additionally, these rifles seem to have a few sections of Picatinny rails here and there.

If I were building an MK III clone, I would use the M-LOK rail. Most of the firearm world uses M-LOK, and you’d find more accessories for an M-LOK rail. BCM’s rails are top-tier, with a high degree of quality that helps set them apart. They wear rail slots at four different angles to allow you to add accessories everywhere you want them to be.

MK IV Note – The longer barreled MK-IV rifles wear either 13 or 15-inch rails depending on the barrel length.

Futuristic Front and Back: Hera Buttstock and Foregrip

The HERA CQR furniture adds that futuristic look to the rifle. The furniture includes the stock with a thumbhole pistol grip and the forward vertical grip. Hera makes some good gear, but the CQR furniture always seemed more about looks than practicality. It does look neat, and the Tomorrow War capitalized on that need to look cool rather than be effective.

It’s not that it’s not effective or useable. It’s very…well… it’s extra. The grip is huge, and the stock is fixed, but you can adjust the length of pull via spacers. Just not on the fly. The grip and stock offer plenty of space to connect a sling. You get both QD and slots to attach your sling any way you want.

This furniture takes something like a short carbine and turns it into something you can believe from the future. The MK III is, at its core, an AR rifle, but the futuristic Hera CQR furniture takes it to a different level and makes it almost unrecognizable.

Almost.

Hera CQR Foregrip

Hera CQR Buttstock

The Optic: Trijicon 4×32 ACOG

Across the top is a sight any Marine from the GWOT will recognize. It’s a Trijicon ACOG. The ACOG is a fixed power prism sight that packs a 4X optic into a compact and tough package. These ACOGs wear their kill flashes at the front to prevent glare from giving you away.

ACOGs are cool optics. They are extremely rugged and reliable. They use a combination of fiber optics and tritium to power their illuminated reticle. It’s literally powered by the sun! The brightness adjusts automatically based on ambient light. It might seem old by 2051, but it’s proven tech that doesn’t require batteries.

The ACOG is an easy-to-use optic with a built-in bullet drop compensator. These bullet drop compensators are paired with a very specific round and barrel length to be accurate. I can’t find any designed to be paired with an 8-inch barrel.

It would seem that future Trijicon designed the optic around the MK III and its futuristic new round and barrel length.

The other optic: Trijicon SRO

Mounted with a 45-degree offset rail sits a mini red dot. The circular window gives it away as a Trijicon SRO. The SRO is an advancement on the famed RMR. Trijicon claims that the circular window allows for faster dot acquisition, and in practice, it does seem easier and more natural.

Like the RMR (and any Trijicon product really), it’s extremely rugged and designed to take a beating. That’s a must-have requirement for fighting a war. Red dots are fairly simple and made from aluminum and glass, so breaking seems to be what they are made to do. However, the SRO will hold up to whatever abuse the White Spikes throw at them.

The SRO makes sense when paired with an ACOG. ACOGs offer a fixed magnified view, and using one for CQB is doable but not as fast or as reliable as a red dot. An offset red dot allows you to transition to extremely close quarters quickly. An SRO does a fantastic job of complementing the ACOG.

The Weapon Light: Inforce WML Gen 2

Across the top of the rail sits a weapon-mounted light. This light is the Inforce WML Gen 2. Inforce makes some interesting lights, and the ramp design of their WML looks fairly futuristic and blends in well with the gun if you’re looking to use a 12 0 clock light on a gun with a very short rail.

One of the benefits of the Inforce WML Gen 2 is that it is very lightweight. It’s only 3.2 ounces and is fairly short at 4.2 inches. The downside to such a small, lightweight light is that it pushes just 400 lumens. For some tasks, that’s fine, but it’s fairly weak compared to more modern lights from Surefire, Streamlight, Cloud Defensive, etc.

The Inforce WML Gen 2 does help the MK III looks fairly futuristic. It’s also easy to use and very ergonomic, with a huge push button at the back of the ramp.

The Mags: PMAGs and MFTs

Magpul and Mission First Tactical are apparently still around in 2051. They and possibly some other companies I can’t quite identify provide magazines to the men and women fighting the White Spikes.

Apparently, they’ve cracked the code to significantly expand the capacity of mags in the future because no one ever seems to reload. They fire full auto all the time, in both long and short bursts but never seem to run out of ammo.

Polymer mags have become the standard in the firearms industry, and PMAG is the gold standard. They are the magazine most often included with new rifles these days. They’re everywhere – and for good reason.

Them’s the basics, folks.

Now that we’ve covered the parts that make up the MK III, let’s talk about what could’ve been done better. The Tomorrow War rifle isn’t built for practicality, it’s built to look good on screen. And in that sense, it absolutely nails it. It’s sleek, aggressive, and fits right into the movie’s futuristic aesthetic.

But if we’re judging it by how it’s supposed to function in the story (as a weapon used to fight off brutal alien threats) it comes up short. Mostly, it seems designed to emphasize just how unstoppable the White Spikes are. The constant muzzle flash, the endless mag dumps, the select-fire chaos, it all serves the action, not the realism.

From a Hollywood perspective, I get it. But if I were gearing up to take on feral alien monsters with armor for skin, I’d build something a whole lot different.

Like so:

Make it a 300 Blackout

If I made my own MK III, it would probably be in 300 Blackout. .300 Blackout is designed to be used in very short barrels, and in an 8-inch barrel, it makes an absolute ton of sense. .300 Blackout works best from a 9-inch barrel, so 8 inches is just a little less than optimum.

An 8-inch .300 Blackout barrel isn’t that hard to find and would make the rifle much more effective. Plus, I could suppress it fairly easily.