UNSC Mammoth

The M510 Mammoth siegework has no equal in size, firepower, or tactical faculty within the UNSC's mobile planetside support contingent, making it one of the most powerful ground assets ever designed by humans. At roughly 70 meters in length and carrying numerous mounted support weapons and materiel caches, the M510's most significant attribute is its topside MAC, designed to target and eliminate hostile vessels, weapons, and even fortifications residing in terrestrial or even suborbital positions.

Ideal for kids ages 8 and up!


  • Buildable UNSC siegework vehicle measuring over 19" long (49cm) by 9" high (22cm)
  • Removable hull and multiple interior compartments
  • Multiple lowering ramps for troop and vehicle deployment
  • Vehicle bay designed to store and transport a fully loaded UNSC Night Ops Gausshog (sold separately)!
  • Figures included: Spartan Recruit, Spartan Operator, Marine, all-new Commander Lasky and mini light-up Roland!
  • Pieces 2030
  • Age 8+
  • Item #97174

$ 179.99 USD (MSRP)

  • Building Instructions PDF

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21 Product reviews

    Ooooooo such a fun set to build. The colors are great but the build is anoying as it can be hard to find the right parts I highly recommend sorting this one out. the build and end product is so worth it. The vehicle has alot of size and it looks really good even if it's (you know not to proper scale, I'm looking at you elephant) time wise this one tock me the longest 20+ hours, the actual joy of the build falls behind the dawn and spirit the spirt (of which) being the funnest to build. The mammoth itself is a grand set though and once completed has a bunch of personality and character the set is very apealing and it's very cool to be able to actually drive a warthog into the back end of it. You can also park a old version cyclops inside it as well. The figs are nothing special exsept of course for the first and only action figure ever of commander lasky and the AI Roland. The spartans have a nice color sceme to them but the marine is a bit bland. Would have liked another figure or two for this set but they are getting better at that with the newer signature series sets. Definitely a must buy for fans of the halo verse. Just don't pay over 300$ for it though.

    Had a great time building it. 25hrs aprox time spent on it. My son loves Halo. For the money I feel the kit should have been put together better. I was missing 4 pieces. Fortunately 2 were underneath the vehicle and you can't really see it. The other 2 were C-clamp style that helped hold the fog lights on. One on each is sufficient I guess but the instructions called for 2 on each. I also had a melted/deformed block and 50! extra pieces :/ I assembled the mammoth in a room with just a table and 2 chairs. There was no chance I lost the pieces. They were never there. Better QC on these bigger kits I guess guys ;)

    Fun to build. Safer than competition equivalent...didn't collapse when picked up

    This set is HUGE! I love this set and i think it is something that people should get. However, this set is also the most expensive Halo Mega Bloks sets by far. And plus, the set is not to full scale, but who cares? A full scale model will likely cost $250. The Signature series sets are never full scale anyway. I mean, the mammoth is just pure awesome. And I always wanted to see this in the line. Definitely a set i would recommend to those builders who have a lot of money to throw out.

    Not to scale or actual design of original in game that its supposed to be based on. Missing one full level outside and inside it is not a flat top base like this model makes it out to be. Nor do the upper engine baffles in the back actually open on the original like on this model. Also the front hatch is too small for the warthog or even a mongoose to exit from.