Set Details
- Set Number
- 4990
- Name
- Rock Raiders HQ
- Theme
- Rock Raiders
- Year
- 1999
- Pieces
- 411
- Complexity
- Substantial
- Build Time
- 2-4 hours
- Ages
- 10+
- Type
- Play-focused
About LEGO Rock Raiders HQ
LEGO Rock Raiders HQ (set #4990) is a detailed build with 411 pieces from the Rock Raiders theme, released in 1999. The Rock Raiders line features mining vehicles and caves on an alien planet. This is a substantial-level build suitable for ages 10+, with an estimated build time of 2-4 hours. This set dates from the 1990s, a turbulent decade when LEGO launched Star Wars and Mindstorms while navigating financial difficulties.
Set Highlights
- 411 pieces at substantial complexity — a 2-4 hours build.
- Compatible with all standard LEGO sets — bricks extend naturally into other sets you own.
- Play-focused build with interactive elements designed for 10+ builders.
- Classic-era set from 1999 — no longer in production and popular with collectors.
Who Is This Set For?
Gift for Ages 10+
The substantial difficulty makes this accessible without being trivial — a well-matched gift for LEGO fans in the 10+ age range.
Weekend Build Project
411 pieces with an estimated 2-4 hours fits comfortably into a focused afternoon or weekend session.
Expanding a Rock Raiders Collection
A solid addition for collectors building out their Rock Raiders shelf. Introduces parts and builds that complement other sets from the same line.
Build Tips
A five-minute sort by color or piece type before starting saves time hunting for specific bricks mid-step.
Follow the numbered steps in sequence — structural elements early in the build support everything that comes after.
For active play sets, key connection points (hinges, turntables, clip joints) can loosen over time — a small dab of LEGO's own tube clutch lubricant on the stud resolves most looseness without damage.
Finding Instructions
Building instructions for LEGO Rock Raiders HQ (#4990) are available as a free PDF on LEGO.com. You can also upload a photo of this set to LegoFinder to identify it and access the instructions directly.
Rock Raiders HQ FAQ
Related Reading
More Rock Raiders Sets
See all Rock Raiders →
Also Released in 1999
All 1999 sets →Similar Build Difficulty
Sets at roughly the same piece count and complexity tier — different theme and year, but a similar build experience.
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