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Compatible with / aftermarket for products by Mattel, Inc. Not affiliated with, endorsed, or sponsored by Mattel, Mega Brands, or any franchise rights-holder.

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GPT03 · Halo Building Box · BlokBlok

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Sets
Halo
Halo - Infinite
GPT03

GPT03

Halo Building Box

Year released: 2020
Year discontinued: —
Pieces: 450
Figures: 2
Brand era: MegaConstrux
Weight: —
Retail price (USD): —

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Inventory

Looks complete (402/450 parts · 2/2 figs) — not verified

Minifigures2 logged· 2 types

×1Figure, Halo: Spartan Gungnir - Red (Reach Armor)FIG-GPT03-A
×1

Item catalogued 2026-05-08. No community contributions yet. Be the first to suggest an edit, image, or inventory line.

Instructions

OfficialInstructions on service.mattel.com↗

Sources & cross-references (2)

Mattel customer serviceGPT03 ↗
Mattel instruction PDFhttps://service.mattel.com/instruction_sheets/GPT03.pdf ↗

Spartan EVA - Blue (Reach Armor, Building Box)FIG-GPT03-B

Parts402 logged· 109 types

×2Plate 2 x 2 with axlesAM19397APGGray, Steel
×6Brick Modified 1 x 1 with side studMA07629APGGray, Steel
×6Brick Modified 1 x 1 with side studMA07629AXUGreen, Light Olive Drab (Metallic)
×2Brick 1 x 1 roundAM00910ZDYellow (Translucent)
×6Plate 2 x 6MA1480AXUGreen, Light Olive Drab (Metallic)
×1Plate 1 x 5MA07475AXUGreen, Light Olive Drab (Metallic)
×6Slope brick 45 1 x 2 inverseMA1417AXUGreen, Light Olive Drab (Metallic)
×9Slope 33 1 x 3 with Stud on TopMA1323AXUGreen, Light Olive Drab (Metallic)
×1Container: crate 3 x 2 x 3, lidAM18670MMGray, Dark (Metallic)
×1Weapon Attachment, Assault Rifle Modular Ammunition ReadoutAM80869MMGray, Dark (Metallic)
×1Shield, Covenant Deployable Cover BaseAM18168MMGray, Dark (Metallic)
×1Slope brick 45 1 x 2 inverse with axle, rightAM17065APGGray, Steel
×1Weapon, Vehicle: medium gun on horizontal clips, handles, type 01AM18253MMGray, Dark (Metallic)
×9Brick 1 x 2 stoneMA02929AXUGreen, Light Olive Drab (Metallic)
×1Weapon, Firearm: M19 Rocket LauncherAM19772JZGreen, Army
×1Miscellaneous: blok separator ''building tool''AM80855MCXOrange, Marigold
×1Windscreen 4 x 1 x 2 rounded double convexAM17002AAVBlue, Medium (Translucent)
×1Slope brick 45 1 x 2 doubleAM19165AXUGreen, Light Olive Drab (Metallic)
×9Slope brick 45 2 x 2MA10273AXUGreen, Light Olive Drab (Metallic)
×4Wall 2 x 6 x 3 open frame with cylindrical crossbeamsAM06618MMGray, Dark (Metallic)
×1Connector: pipe, small 3 studs longAM72233APGGray, Steel
×1Container: crate 3 x 2 x 3AM18669MMGray, Dark (Metallic)
×1Firearm: Semi Auto Pistol (Infinite Sidekick Model Variations)AM79624KMGray, Dim (Metallic)
×6Engine component: intake turbine 2 x 2MA17010APGGray, Steel
×1Slope Brick, Halo DecalAS-GMB80-02MULMulticolored
×1Plate 2 x 2 with handleMA18329AXUGreen, Light Olive Drab (Metallic)
×2Plate 2 x 12MA1172MMGray, Dark (Metallic)
×2Connector: pin, smallAM17003MMGray, Dark (Metallic)
×9Brick 1 x 4MA01087ANWSand, Dark (Camo)
×9Brick 1 x 4MA01087AXUGreen, Light Olive Drab (Metallic)
×1Bracket 1 x 1 - 1 x 1 with studAM04428AXUGreen, Light Olive Drab (Metallic)
×1Bar 1 x 1 x 1 with Perpendicular HandlesAM18287APGGray, Steel
×1Wedge Slope 25 1 x 2 corner, rightAM17130AXUGreen, Light Olive Drab (Metallic)
×1Tile 1 x 3 with raised offset handleAM17067APGGray, Steel
×9Plate 2 x 2MA03773AXUGreen, Light Olive Drab (Metallic)
×1Plate 3 x 6 with cutoutsAM17063AXUGreen, Light Olive Drab (Metallic)
×2Wheel, Halo with TireAS-GMB80-05MULMulticolored
×1Slope Brick, Halo DecalAS-GMB80-03MULMulticolored
×1Weapon, Vehicle: M41 light anti-aircraft gunAM18158MMGray, Dark (Metallic)
×6Plate 1 x 2 with two studs on side, descendingMA76467AXUGreen, Light Olive Drab (Metallic)
×6Turntable 2 x 2, TopMA03484FBlack
×9Brick 2 x 2 roundMA1320APGGray, Steel
×6Tile 2 x 2MA0948AXUGreen, Light Olive Drab (Metallic)
×2Wheel, Halo with TireAS-GMB80-04MULMulticolored
×1Weapon, Firearm: UNSC Bulldog ShotgunAM80853MMGray, Dark (Metallic)
×2Gear: traffic coneAM15065JUOrange, Smoky
×1Firearm: M45D Tactical ShotgunAM74941KMGray, Dim (Metallic)
×6Turntable 2 x 2, BaseMA03485AXUGreen, Light Olive Drab (Metallic)
×2Plate 2 x 8MA08483AXUGreen, Light Olive Drab (Metallic)
×6Brick 1 x 1 roundMA0910AXUGreen, Light Olive Drab (Metallic)
×2Plate 1 x 3 Offset HandlebarAM17116MMGray, Dark (Metallic)
×6Plate 1 x 1 with horizontal clipMA74415AXUGreen, Light Olive Drab (Metallic)
×6Slope brick 33 1 x 2MA04430FBlack
×9Brick 2 x 2MA09023AXUGreen, Light Olive Drab (Metallic)
×9Brick 2 x 2MA09023MMGray, Dark (Metallic)
×8Brick Modified 1 x 2 with side studsMA17502AXUGreen, Light Olive Drab (Metallic)
×1Slope brick 45 1 x 2 inverse with axle, leftAM17064APGGray, Steel
×1Plate 8 x 8, newMA18556MMGray, Dark (Metallic)
×1Tile, Halo DecalAS-GMB80-01MULMulticolored
×1Firearm: UNSC MA40 Assault Rifle without Ammo ReadoutAM80861MMGray, Dark (Metallic)
×1Wedge Tile 1 x 2 without corner, leftAM74299AXUGreen, Light Olive Drab (Metallic)
×6Tile 1 x 2MA22501AXUGreen, Light Olive Drab (Metallic)
×2Weapon, Exotic: Muzzle Flash, Cone ShapedAM79770KCOrange (Translucent)
×1Plate 4 x 6MA17055AXUGreen, Light Olive Drab (Metallic)
×1Plate 4 x 6MA17055APGGray, Steel
×9Slope brick 45 2 x 2 inverseMA1154AXUGreen, Light Olive Drab (Metallic)
×2Grenade: Fragmentation, Type 01AM19202JZGreen, Army
×1Bar, Pin, Small with Hand GripAM76060FBlack
×3Plate 1 x 3 with hollow studsMA72600AXUGreen, Light Olive Drab (Metallic)
×2Wedge Plate 2 x 3 Mudguard - LeftAM17001AXUGreen, Light Olive Drab (Metallic)
×2Wedge Plate 2 x 3 Mudguard - RightAM17000AXUGreen, Light Olive Drab (Metallic)
×1Firearm: UNSC Battle Rifle w/ Accessory Rail (Halo 5 Style)AM79605FBlack
×6Brick 1 x 1MA01086AXUGreen, Light Olive Drab (Metallic)
×1Halo Energy Shield, Light BlueAS-FMM88-01MULMulticolored
×2Slope plate 2 x 1MA09835AXUGreen, Light Olive Drab (Metallic)
×2Plate 2 x 6 Irregular (Figure Stand)AM76357ANWSand, Dark (Camo)
×9Plate 2 x 4MA09493AXUGreen, Light Olive Drab (Metallic)
×9Plate 1 x 4MA09593ANWSand, Dark (Camo)
×9Plate 1 x 4MA09593AXUGreen, Light Olive Drab (Metallic)
×1Connector: pin with double clipAM18260APGGray, Steel
×6Tile, Modified 1 x 2 w/ 5 Lateral NotchesMA09198MMGray, Dark (Metallic)
×2Weapon, Firearm: blast deflector, light, horizontal clipAM16636AXUGreen, Light Olive Drab (Metallic)
×1Wedge Tile 1 x 2 without corner, rightAM74300AXUGreen, Light Olive Drab (Metallic)
×1Wedge Slope 25 1 x 2 corner, leftAM17129AXUGreen, Light Olive Drab (Metallic)
×6Plate 1 x 2MA09393MMGray, Dark (Metallic)
×6Plate 1 x 2MA09393AXUGreen, Light Olive Drab (Metallic)
×3Slope brick 33 1 x 2 with studs on slopeMA04429AXUGreen, Light Olive Drab (Metallic)
×9Brick 2 x 4MA09033AXUGreen, Light Olive Drab (Metallic)
×9Brick 2 x 4MA09033ANWSand, Dark (Camo)
×9Brick 2 x 4MA09033MMGray, Dark (Metallic)
×1Weapon, Melee: Sword, Energy Type 01AM16982AAVBlue, Medium (Translucent)
×2Plate 2 x 3MA03772AXUGreen, Light Olive Drab (Metallic)
×1Weapon, Firearm: SMG with mounting point for suppressorAM79281FBlack
×6Slope brick 45 1 x 1MA15258AXUGreen, Light Olive Drab (Metallic)
×9Brick 1 x 2 with vertical cutout and six notchesMA1133APGGray, Steel
×6Sandbag, HeavyAM74718AUGSand, Pale
×1Slope brick 45 4 x 2 inverse with axles & roll barAM17159APGGray, Steel
×1Shock RifleAM80852ALGGray, Dark Smoke
×2Weapon, Exotic: Muzzle Flash, Wide BurstAM79769KCOrange (Translucent)
×1Plate 2 x 4 with rounded right cornerMA03324AXUGreen, Light Olive Drab (Metallic)
×1Tile 2 x 2 without cornersMA18543MMGray, Dark (Metallic)
×2Slope brick 25 1 x 2MA17128AXUGreen, Light Olive Drab (Metallic)
×1Plate 2 x 4 with rounded left cornerMA03323AXUGreen, Light Olive Drab (Metallic)
×9Brick 1 x 2MA09013ANWSand, Dark (Camo)
×9Brick 1 x 2MA09013AXUGreen, Light Olive Drab (Metallic)
×6Plate 1 x 2 with one stud, centeredMA07590AXUGreen, Light Olive Drab (Metallic)
×6Slope brick 45 1 x 2MA01322AXUGreen, Light Olive Drab (Metallic)
×4Plate 7 x 8 irregularMA73222ANWSand, Dark (Camo)
×1Fusion Coil - 2 x 2 x 2 Open Crate FrameAM18273MMGray, Dark (Metallic)

Instructions1 logged· 1 type

×1Instruction booklet for GPT03 Halo Building BoxINS-GPT03

Packaging1 logged· 1 type

×1Original packaging for GPT03 Halo Building BoxBOX-GPT03

Price history(last 6 months)

No completed sales in the last 6 months.