Plastic Model Kits and Gunpla — Where to Buy Kits, Detail Parts and Paints in 2026
Building a plastic model kit is only the first part of the process. The kit itself — whether a 1:35 tank, a 1:24 car or a 1:144 Gunpla mobile suit — is the starting point. What separates a finished model from a finished display piece is the detail work: photo-etching, carbon fibre decals, painted interiors, proper tools, and quality paints. This guide covers the specialist retailers whose products make that difference, with verified categories and affiliate links across four partners who cover different parts of the plastic model building ecosystem.
View the Nissan R91CP 3D Printed Wheel Set at Scale Motorsport (affiliate link)
Scale Motorsport — Photo-Etch, Carbon Fibre and Detail Parts
Scale Motorsport is the most specialised supplier on this list, a US-based retailer focused entirely on detail upgrade parts for plastic model car builders. They describe themselves as "the world's leading parts supplier for building model cars", and the catalogue backs that up. If you build 1:24 or 1:43 car kits and want to take them beyond the box-stock result, this is the destination.
Their range covers four main product types, all verified on the live site:
Photo-Etch Sets — laser-cut brass detail parts that replace moulded plastic items with thin, accurate metal alternatives. Seat belts, grilles, brake callipers, wing mirrors, rollcage details and more. Organised by subject category: Road Car Photo-Etch Sets, Le Mans, GT & DTM Photo-Etch Sets, Formula One Photo-Etch Sets, World Rally Photo-Etch Sets and Motorcycle Photo-Etch Sets.
Carbon Fibre Decals — self-adhesive sheets with a carbon fibre texture and templated sets for applying a realistic carbon fibre finish to model bodywork, dashboards and interior panels. Available as flat carbon fibre sheets or as pre-templated sets by subject: Le Mans/GT/DTM, Road Cars, Formula One and World Rally. The GSkinz range for Gundam builders extends the carbon fibre decal system specifically to Gunpla – a crossover that rewards builders who want to add realistic panel texture to mobile suit kits.
3D Printed Detail Parts — resin 3D printed components for Le Mans/GT/DTM and Formula One subjects, covering items too small or complex to produce in photo-etch: Le Mans/GT/DTM 3D Printed and Formula One 3D Printed.
Builder's Tools and Accessories — tools designed specifically for model car building, plus scale wiring for cockpit and engine bay detail work, display stands and reference materials.
The headline product is the Porsche 935 Super Detail Kit — a complete photo-etch and detail upgrade package for the Porsche 935, combining multiple upgrade types in a single set for builders who want the full treatment on a specific subject.
P-Rex Hobby — Gunpla and Japanese Model Kits
P-Rex Hobby is a Canada/US specialist for Bandai Gundam model kits — an officially authorised Bandai retailer with over 1,000 five-star reviews and a reputation for receiving new Bandai releases promptly. For builders who want Gunpla at any grade level, this is the recommended North American source.
The Gunpla range covers the full Bandai grade system. Entry Grade (EG) is the accessible starting point — snap-fit, no tools required, strong accuracy for the price. High Grade (HG) is the standard collector format at 1:144 scale with good articulation and surface detail. Real Grade (RG) adds an internal frame structure at the same 1:144 scale, producing a more mechanically complex and detailed build. Master Grade (MG) moves to 1:100 with full inner skeletal construction. Perfect Grade (PG) is the large-format premium tier with the highest detail ceiling of any Bandai Gunpla format.
The most popular kits in the range include the MG RX-78-2 Ver. 3.0, the RG Wing Gundam Zero EW and the PG Unleashed RX-78-2. P-Rex also carries Bandai Builder Parts — the System Weapon, System Base and HD accessory kits designed for 1:144 and 1:100 models — and an expanding range of non-Gundam Bandai kits covering other mecha, military and character subjects. Use code SCALEANDMOTION at checkout.
- High Grade (HG) Gunpla
- Real Grade (RG) Gunpla
- Master Grade (MG) Gunpla
- Perfect Grade (PG) Gunpla
- New Release Gunpla
- Bandai Builder Parts
- GSkinz Carbon Fibre Decals for Gundam — Scale Motorsport's Gunpla carbon fibre system, also available via P-Rex
Browse P-Rex Hobby (code: SCALEANDMOTION)
Monument Hobbies — Pro Acryl Paints and Finishing Supplies
Monument Hobbies produces Pro Acryl — a professional-grade acrylic paint range with a strong reputation in both the miniature painting and plastic modelling communities for coverage, consistency and pigment density. The 22ml bottle size is larger than the 12ml Citadel standard; the formula is designed to work well at brush, wet palette and airbrush viscosities without losing colour integrity through dilution.
For plastic model builders specifically, the most relevant Pro Acryl products are the Paint Singles (individual colours across a well-considered palette), the Metallic Set (iron, steel, gold, bronze and variants – essential for scale armour, cockpit details and engine bays), and the Spray Primers (rattle-can format, formulated to work with Pro Acryl over the top). The Washes range provides shade and panel line formulas that flow into recesses and dry matte, giving a cleaner result than many general-purpose washes.
The Weathering Pigments and Basing Textures round out the system for builders who want to weather and base their finished models to a display standard.
EU customers shop at monumenthobbies.eu using code SCALEMOTION496. US customers shop at monumenthobbies.com using code SCALEMOTION776.
- Pro Acryl Paint Singles
- Pro Acryl Paint Sets — Starter, Base, Metallic, Expansion
- Pro Acryl Washes
- Spray Primers
- Weathering Pigments
- PRO Series Brushes
Merlin's Miniatures — Citadel Paints, Brushes and Hobby Supplies
Merlin's Miniatures is a UK-based specialist stocking Citadel paints, brushes, basing materials and general hobby supplies alongside their wargaming and miniatures range. For UK-based plastic model builders who want Citadel paints at competitive pricing with reliable stock levels, Merlin's is a practical source — particularly via their Orbital Drop newsletter promotion, which periodically includes paint ranges in their monthly discount offers. Merlin Points (100 points = £1) accumulate with every order.
Use code SCALEANDMOTION at checkout: browse Merlin's Miniatures hobby supplies.
- Citadel Paints — full range including base, layer, shade, contrast and technical paints
- Model Basing Materials — static grass, texture pastes, scatter, tufts and rocks
Mighty Lancer Games — UK Hobby Retailer
Mighty Lancer Games is a UK retailer with a physical shop in Bridlington, East Yorkshire, covering model kits, paints, hobby supplies and games with free delivery on orders over £50. Worth browsing for UK-based builders who want a general hobby supplier with broad stock: visit Mighty Lancer Games.
How the Partners Work Together
Each of these retailers covers a different part of the plastic modelling workflow. P-Rex is the source for Gunpla kits (US/Canada). Scale Motorsport is the source for photo-etch, carbon fibre and detail upgrades on car and racing kits. Monument Hobbies covers paint — particularly for builders who want professional-grade acrylic performance beyond the standard Citadel or Revell ranges. Merlin's covers Citadel paints and basing for UK builders. Used together, they cover the full build process from kit to finished, detailed display piece.
For more on the plastic kit range itself — brands, scales and what to buy — our Complete Guide to Plastic Model Kits covers Tamiya, Revell, Italeri, Airfix and the broader kit landscape in detail.
Browse the Catalogue
Looking for plastic model kits, detail parts, paints and hobby supplies related to this article? The Scale & Motion curated catalogue organises products by category, all linking directly to verified retailers.
Explore the Scale & Motion catalogue
Further Reading
- The Complete Guide to Plastic Model Kits: Brands, Scales and What to Buy in 2026 — Tamiya, Revell, Italeri, Airfix and the full kit landscape via Hobbies.co.uk.
- Tamiya 1/14 Scania 770 6x4 RC Truck — Full Review — The Tamiya truck kit range sits at the intersection of plastic modelling and RC; this review covers the build process in detail.
- Discover the Joy of Tamiya Plastic Model Aircraft Kits — Tamiya's aircraft range covered in detail, with guidance on scale and subject selection.
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