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MS03 Iron Arm | Moon Studio Radiatron Combiner

MS03 Iron Arm | Moon Studio Radiatron Combiner


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Product Specs

Manufacturer Moon Studio
Size 8.3 inches
Scale Masterpiece Scale
  • MISB (Mint in Sealed Box)
  • Case Fresh From a Factory Sealed Case
Alt Mode Train

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Product Description


MS03 Iron Arm | Moon Studio Radiatron Combiner

ToyGeek code: MS03-IRON-ARM

From Moon Studios comes a series of robot figures which transform from robots into different types of trains.


The MSO3 Iron Arm figure transforms from a robot into a train.


Collect transforming figures MSO1 through MSO6 and you can combine them to form Radiatron! 


Note: All other figures shown sold separately.

Product Features

  • Toy Size: 8.3 inches
  • Scale: Masterpiece Scale
  • Transforms from robot to train and back
  • Alt Mode:Train
  • Combine all 6 figures to form Radiatron
  • Third part figure
  • Other figures shown sold separately
  • Made of plastic
  • Product is brand new and in mint condition

Packaging Contents

  • 1 x MS03 Iron Arm Figure

WARNING: All items sold by Toygeek are intended for adult collectors. Items may have small parts or other elements not suitable for children under 16 years old.

Moon Studio MS03 Iron Arm in his train alt mode!

Moon Studio MS03 Iron Arm includes a blaster weapon!

Moon Studio MS03 Iron Arm is part of the Radiatron combiner!

Customer Reviews


Customer Reviews

5 out of 5 stars overall


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Stoughton, WI

March 19, 2023

I bought the all six combiner Radiatron. I mess with them in train form and bought a Lego train track so I could interlink all six trainbots in their alt mode. I ended up liking it so much in ntheir alt form I decided to buy a second Iron Arm just so I could keep one trainbot in alt mode while the rest are combine to form Radiatron! Get your copies while their here.

Manistee, MI

February 12, 2023

When I got the last piece of my Trains Iron Arm i put it right in Combine mode and Raditron looks excellent and tall

Huntington, IN

April 23, 2022

Unlike my MS-04 moonshine this guy is solid as a ROCK. Maybe a little too stiff in some places but ultimately he feels amazing. He comes packaged in combined mode which was great because I really wanted to slap some pants on my combiner. Some joints specifically for transformation between modes were SUPER loose, I don’t really mind it because once you get him into whatever mode you’re turning him into it holds together perfectly, but I DID get some major Fanstoys rouge vibes in the backpack.

San antonio, TX

April 07, 2022

This figure is intense, it comes shipped in pants mode but is not hard to set up. Thank you tfsource for fast shipping and competitive pricing!!


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