Your guide to the new Horus Heresy Mechanicum Heavy Support Force box set, contents, value, and release date in our savings breakdown!
The Mechanicum is really rolling out the heavy support for the Horus Heresy, and this time, they’ve brought the BIG GUNS! Fans of the machine cult and their relentless march of destruction have a lot to be excited about with the arrival of two new plastic tanks and a heavy support box.
Let’s break down the details of this latest wave of reinforcements that huge miniatures, lore, and tabletop impact in a way that’ll delight Horus Heresy hobbyists, old and new.
Release Date, Pricing, Contents VS. Value
The Mechanicum Heavy Support Force Box Set has a release date of March 8th, 2025. We’ll break down the recent battleforces and army box sets and compare the prices; that way, we can see how much this latest release will save you!
Here is the contents list of everything in the new Heavy Support Force Box:
New Mechanicum Heavy Support Force Box Review
So, you’re thinking about grabbing the Heavy Support Force Box? Well, if you want the new miniatures, this will be the first place to score them! It also looks like it should have some decent value and save you some hobby dollars!
- Base Size: Varies
- Height: Varies
- Alignment: Imperial
- Faction: Mechanicum
- Role: Heavy Support
- Material: Plastic
- Number of Minis: 3
- Release Year: 2025
Mechanicum Heavy Support Force HH Army Box Set: $185 CAD$220 £110 €145
| Models | Unit Name | Value |
| 1 | Thanatar Calix Siege-Automata | $105 |
| 1 | Krios Battle Tank | $84 (Based on similar-sized tanks) |
| 1 | Karacnos Assault Tank | $92 (based on Triaros) |
| Heavy Support Force Box | ||
| Total MSRP: | $281 | |
| Savings Versus Box Price: | $96 | |
Battleforce, Army Box Set Comparisons & Value
Below, you can see how the new Death Korps of Krieg Army Box compares to older Battleforces, like the Space Marines (which featured 20 models) and the Deathwing Assault releases.
| Box Set Name | Price | Qty of Minis | Value |
| Deathwing Assault | $220 | 22 | $124 |
| Heavy Support Box | $210 | 3 | $96 |
| Council of the Death Lord | $230 | 20 | $120 |
| Blood Angels Army Box | $230 | 23 | $227.50 |
| Stompa Boyz Battleforce | $210 | 23 | $166 |
Pricing By Country
| Country | Price |
| United States | $185 |
| Canada | CAD$220 |
| United Kingdom | £110 |
| Europe | €145 |
Is This Worth It?
In short, yes! While the Mechanicum Heavy Support Force Box doesn’t have the highest value we’ve ever seen, it is packed with all-new miniatures that people have been waiting for!
Even though there isn’t any infantry, it will be the first place you can grab any of the new stuff, and who doesn’t want the giant machines? However, if you don’t want all three models inside, you’ll be better off buying them separately. But if you do want all three, this will save you a lot!
Plus, it pairs well with the Mechanicum Battlegroup box, which you may still be able to find.
How Many Points Is It?
If you’re wondering how many points the Heavy Support Box racks up to, we’ve got you covered. In Horus Heresy, this box hits with about 600 points. But, as you know, the tides of the Grimdark universe are ever-shifting, and with the latest points updates, that number could quickly fluctuate.
One minute, you’re ready to purge heretics, and the next, you’re recalculating your list because the points gods have decided to have some fun.
Where to Buy Yours
Mechanicum Heavy Support Force HH Army Box Set Retail Price: $210 CA$260 €170 £125
Snag your new Heavy Support Force box set from our handpicked list of retailers, and give us a high-five in support! Every qualifying purchase helps Spikey Bits keep the lights on and the fun going.
Quick Order Links Get 15% Off or More:
Mid Atlantic US: Fabricators Forge | Bazooka Games | Frontline Gaming (West Coast US) | The Rogue Traders | Central US: Dicehead Games | Noble Knight Games | Warpfire Minis | West Coast US: Squadmarks |
Worldwide: Amazon | eBay| or | Games Workshop’s Store | UK: Element Games (UK) | Merlin’s Minis | Wayland Games | Canada: Tista Minis | Abyss Game Store | Kingdom Titans |
Contents & Description
Thinking of starting an HH Mechanicum army? The Mechanicum Heavy Support Force box contents are like a grim gift from the Omnissiah Emperor himself—packed with all the big machines to kickstart your force; it’s both practical and downright beautiful.
Krios Battle Tank
The Krios Battle Tank is a different breed from the more commonly seen Predator or Sicaran tanks of the Legiones Astartes. Instead of heavy armor, the Krios relies on a web of energy shielding, giving it more maneuverability without sacrificing durability. This tank is all about keeping its massive centerline-mounted lightning cannon locked onto priority targets.
For those who prefer a different style of destruction, the Krios in the Mechanicum Heavy Support Force can swap its primary weapon for either an irradiation blaster or a pulsar-fusil. Equipping the latter turns it into the Krios Venator, a battlefield variant designed for more specialized engagements.
No matter which version you choose, the tank’s command throne is shielded, allowing its wired-in pilot to direct fire with absolute precision.
Karacnos Assault Tank
If the Krios are built for mobility and precision, the Karacnos Assault Tank is all about overwhelming firepower. This machine is a variant of the Triarios Armored Conveyor, a transport known for its hermetically sealed armor that keeps its occupants protected from the horrors of war.
Instead of carrying troops, the Karacnos houses twin mortar batteries loaded with radiological warheads—ideal for wiping out organic threats ahead of the Mechanicum Heavy Support Force’s march.
Thanatar Siege-automata
The Thanatar Siege-automata isn’t your average battlefield brawler—it’s a walking artillery platform built to lug around some seriously oversized firepower. The Thanatar-Cavas model packs a Hellex pattern plasma mortar, which lobs scorching spheres of destruction straight into enemy fortifications. Where exactly this machine came from is a bit of a mystery, but one thing’s for sure—its massive gun is pure Ryza craftsmanship, the only place cranking out Hellex pattern weapons.
What to Buy Next?
Well, this is only a small portion of the new stuff coming for the army, so we would grab all the other releases and, of course, a ton of infantry! These will get you a decent amount of points, but without all the infantry and characters, you’ll have trouble going far. so be sure to check out the Mechanicum Battle Group for starters too.
Final Thoughts: New Mechanicum Heavy Support Set
So, there you have it; whether you’re a hardcore fan or just getting into Horus Heresy, it’s clear that this new army box set packs a punch. With a mix of powerful minis and some sweet savings, it’s definitely worth considering adding to your collection.
See The HH Mechanicum Battle Group Value Here!
What do you think of the new Horus Heresy Mechanicum Heavy Support Force Box Set, its contents, value, release date, and costs?
Travis has been a Warhammer 40k hobbyist since the 1990s, playing the game since Third Edition. Through extensive traveling, he’s seen a lot of the miniatures hobby from across the world, giving him a unique perspective on the latest gaming topics and trends.
Travis’s brother even owns a commission painting studio, where he’s picked up a lot of good advice and techniques for painting Warhammer and tabletop miniatures over the years, as well. Travis joined the Spikey Bits team in 2019 and has been the lead writer since 2020.
