Springfield's New Heatseeker Rifle is a True 1/2 MOA Factory Gun

It isn’t true, as Colonel Townsend Whelen famously wrote, that “only accurate rifles are interesting.” However, a rifle that can shoot a dime at 100 yards is alwaysmoreinteresting than one that can’t, which is why I’m excited to tell you more about the new Heatseeker rifle from Springfield Armory.

The Illinois gunmaker has been quickly expanding the Model 2020 line over the last few years, and the latest iteration hit the shelves in the latter half of 2025. The Heatseeker uses the popular Model 2020 action but marries it to a Sharps Bros. Heatseeker Chassis. The combination promises the modularity of an AR-platform rifle and the precision of a bolt-action—and on that second score, I gotta say, this rifle delivers.

Specifications

Calibers Offered: 6.5 Creedmoor (tested), 308 Winchester

Color: Coyote Brown

Barrel: 20" Carbon Fiber, 1:8, 5/8x24, Coyote Brown Cerakote® H-250

Receiver: Model 2020 Stainless Steel, Coyote Brown Cerakote® H-250

Optic Mounting: Picatinny Mount, Rem 700 SA Pattern, 6-48 Screws

Bolt: Fluted 4140 Tool Steel, Nitride

Stock: Sharps Bros Heatseeker M-Lok Chassis; B5 Systems Collapsible Precision Stock - Large; B5 Systems P-Grip 23

Trigger: TriggerTech Adjustable, 2.5 - 5 lbs

Muzzle Device: Thread Protector

Magazines: 5-Round AICS

Weight: 7 lbs 10 oz

Length: 40.5" - 41.75"

MSRP: $2,355

Ultra-Modern

Springfield’s pitch for the Model 2020 has always been that it’s the ultimate modern rifle. Springfield Armory—not to be confused with the historic government arsenal of the same name—has been making bolt-action long guns for only six years. Getting into the game so late, they say, gives them fresh eyes and allows them to adopt all the best ideas from previous designs.

TheModel 2020action features a 90-degree bolt throw, removable bolt head, dual locking lugs, and a fluted bolt. New gun designs almost always experience growing pains, but the 2020 has been around long enough that if there were any major design flaws, they would have been exposed.

This iteration of the Model 2020features aSharps Bros. Heatseeker Chassis, which offers the rigidity of a competition system without quite as much weight. The chassis proper (the portion that bolts onto the receiver) clocks in at 19 ounces while the removable handguard weighs a scant 10 ounces. Both are constructed from aluminum, and the chassis is crafted from billet (solid block) high-strength 6061-T6. That gives it excellent rigidity, which contributes to accuracy and repeatability. It also accepts standard AICS magazines (one included), so you won’t have any trouble feeding your new rifle.

The only downside of this chassis system is that you have to remove the handguard before taking the barreled action out of the rifle. That can be accomplished easily enough by loosening two screws on the bottom of the handguard and sliding it off the barrel. But it adds an extra step to the process, so it’s worth noting.

The Heatseeker chassis looks like many other modern chassis systems, but it offers one (relatively) unique advantage: It accepts AR-15 furniture. The pistol grip can be swapped out for any standard AR grip, and the rear of the chassis can be fitted with an AR-style buffer tube and corresponding stock. In this case, the rifle comes with aB5 Systems Collapsible Precision Stock. The B5 Precision Stock uses two rotating wheels that quickly and securely adjust the comb height and length of pull (LOP). I especially liked the cheek riser. It uses soft, rubbery padding, and I appreciated being able to adjust it to precisely the right height.

The system works as intended, but you can decide for yourself whether it’s useful. It does allow you to easily swap stocks to fit your needs. This B5 stock is comfortable but bulky, so you might want a more streamlined stock for walking through the woods or climbing into a tree stand. But I don’t see many people needing the six-position buffer system. Most scopes can’t be mounted far enough to the rear to use any but the shortest and next-to-shortest stock position. Plus, the B5 stock can already adjust for LOP, so the six-position tube is redundant.

Thepistol versionof the Heatseeker uses a picatinny rail instead of a buffer tube, which I think is a much more useful option. Unfortunately, Springfield only offers the pistol in .308 Win. with a 12-inch barrel. It’s a slick little setup–especially with a suppressor–but not ideal for all hunts or applications. I’m hoping they expand the pistol lineup in the near future.

Build It Yourself?

Springfield uses all aftermarket parts on its new rifle, allowing product developers to pick and choose high-quality components. Many rifle makers these days have adopted this strategy. They produce barreled actions in-house but source the stock, trigger, and associated parts from other companies. On this rifle, the chassis is from Sharps Bros., the stock and grip are from B5 Systems, and the trigger is from TriggerTech.

This begs the question: why would you pay Springfield to assemble theModel 2020 Heatseekerif you can just do it yourself using the company’sstandalone action? Installing a trigger in a receiver and fitting the receiver to a chassis is easy, especially with the right tools and a little know-how. If you plan to swap out the stock, it seems like you could save some money by making a Model 2020 Heatseeker yourself.

Here’s how the costs break down:

As you can see, Springfield’s MSRP of $2,355 is fair enough, and I’mseeing these rifles online for closer to $2,100.

My build-it-yourself total also doesn’t include the cost of paying a gunsmith to install a barrel (~$150), and a carbon fiber unit will likely cost more than $500. I’m also not sure Sharps. Bros even offers the Heatseeker in the Model 2020 platform. They list various actions on their website, but as of this writing, I don’t see Springfield’s among them.

You might not be able to construct exactly the same rifle for a lower price, but it’s still worth looking closely at how these modern rifles are put together—and deciding whether for any particular model, the benefits outweigh the cost.

At the Range

After digging into this rifle’s components, I was excited to take the Heatseeker to the range and start pulling the trigger. I wasn’t expecting it to perform all that much better than theModel 2020 Boundary rifleI tested in 2024. It’s the same action and barrel, and I’ve never seen massive accuracy gains by swapping one modern stock or chassis for another.

Turns out, I was wrong. This thing really shoots. And not just for one or two groups, but for group after group after group. It obviously didn’t prefer those 120-grain all-copper projectiles, but it shot lights-out with match bullets and Sig Sauer’s Marksman Hunter loads.

As you can see, Springfield delivers on its 0.75 MOA promise--and then some. I'm usually skeptical about accuracy guarantees because most modern rifles can shoot at least one good group. To be truly sub-MOA--or 0.75 or 0.5 MOA--the rifle has to deliver group after group.This rifledoes, and it even performed with multiple bullet weights and styles. I honestly can't recall the last time I've tested a factory rifle thataveragesa half-inch group at 100 yards. That's some exceptional performance, and it speaks to the quality of Springfield's manufacturing.

It's possible I received a particularly well-made sample. I've seen other reviews that report less impressive accuracy results, though none used exactly the same ammunition. Still, I think my results show what's possible with good ammo, and I have no doubt that each and every Model 2020 Heatseeker will post good groups with a little trial and error.

Plus, fitted with aMeatEater Banish suppressor, I could shoot this thing all day with zero discomfort. I also never experienced any malfunctions or jams as the Model 2020 action cycled smoothly shot after shot.

So, What’s It Good For?

TheModel 2020 Heatseekerobviously fits within–and is trying to capitalize on–a larger trend in the hunting rifle world. While traditional lines remain popular, many hunters are hitting the woods with modular, AR-like bolt guns that offer far greater levels of customizability. You might get some odd looks from the old-timers if you take the Heatseeker to deer camp, but you’ll get far fewer of those looks today than you would have 10 years ago.

That’s partly because many have recognized the benefits of customizing your rifle to maximize comfort. Using a stock and pistol grip that can be adjusted to your body makes the Heatseeker easier to shoot even from awkward positions. Adding your favorite muzzle device to the threaded barrel helps as well, and the detachable magazine aids in loading and unloading.

A clean, crisp trigger–which certainly describes this TriggerTech model–rounds out the ergonomic picture, making the Heatseeker a pleasure to shoot at the range or in the blind.

And yet, there are better options for both applications. First, Springfield only offers the Model 2020 Heatseeker in two chamberings:6.5 Creedmoorand .308 Winchester. Other Model 2020s are available in long-action cartridges, but it looks like Sharps Bros. only makes a short-action version of their chassis. That short action keeps the rifle’s weight down, but at over 7.5 pounds, it still ain’t light. And while the stock is adjustable, it makes the rifle overly long at any but the shortest positions. All those factors combined, the Heatseeker might not be a good fit for some hunters.

In that case, you might say, the Heatseeker would make a good competition gun. You could certainly shoot it competitively–and depending on your skill, you might have success. But dedicated competition chassis systems offer even greater levels of customization. They can be fitted with weights at different locations to adjust the rifle’s balance, and many utilize an ARCA attachment system for bipods and tripods. And while the 6.5 Creedmoor has won its share of competitions, the lack of cartridge options will be a turn off for many competitors.

The most natural way to think aboutthe Heatseekeris as a crossover gun–something you can take to the field but also use in your local Saturday-morning rifle competition. That entails some compromise, as a rifle dedicated to a single application will always be better at that task than a Jack of All Trades. But do-it-all guns have an appeal of their own, and I think the Heatseeker plays that role well.

Last Shot

I might amend Col. Whelen’s maxim to read, “Some interesting rifles aren’t accurate, but all accurate rifles are useful.”

You, like me, might quibble with some ofthe Heatseeker'sfeatures and question whether they have real appeal. But at the end of the day, a gun that puts a bullet where you want it to go will always be more useful than a rifle that doesn’t–even if that rifle has all the right features. The Heatseeker might be a little cumbersome to carry into the tree stand, but once you get it there, it’ll hit what you’re aiming at as long as you do your part. Same goes for a competition. It might not serve your needs perfectly in each and every scenario, but you can trust it to perform where it counts.

As far as I’m concerned, there’s no higher praise.

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