Where to Buy Brick Parts for MOCs: A Four-Channel Comparison
Product Overview
You have found the instructions, the build plan is locked in, and then comes the genuinely painful part: collecting the parts. Hunting down individual pieces one by one, comparing prices, waiting on shipments — every MOC builder goes through it. Channels differ enormously in price, range, precision and shipping speed. Picking the right one not only saves money, it makes the whole build noticeably faster.
This guide rates the mainstream brick-parts channels on three axes: channel type, price band and best use case, so you can spend less time sourcing and more time building.
Build Difficulty
Parts-sourcing difficulty: ★★★☆☆
Sourcing is the most patience-testing stage of any MOC. For a small-to-mid build of 500-1000 parts, one channel is usually enough to complete the list. Past 2000 parts you will typically need to combine two or three channels, which takes some channel-management experience.
Parts Review (Channel Comparison)
Channel 1: LEGO Bricks & Pieces (official)
- Price: ★★★☆☆ (on the high side)
- Range: ★★★★★ (the widest)
- Lead time: 2-4 weeks
- Recommended for: filling gaps in rare parts and special-colour pieces
Channel 2: Chinese compatible loose parts (PinQi, Double Eagle, SEMBO and similar brands)
- Price: ★★★★★ (very low, roughly 1/3 to 1/5 of LEGO)
- Range: ★★★☆☆ (common parts well covered, special parts thinner on the ground)
- Lead time: 3-7 days
- Recommended for: bulk basic parts and the skeleton of large builds
Channel 3: Secondhand brick market (Xianyu, BrickLink and others)
- Price: ★★★★☆ (some retired pieces carry a premium)
- Range: ★★★★☆ (strong on out-of-production and rare parts)
- Lead time: 3-10 days
- Recommended for: retired pieces and secondhand part-out lots
Channel 4: Parts bundled with instructions on BrickPlan.cn
- Price: ★★★★☆
- Range: ★★★★☆
- Lead time: 3-5 days
- Recommended for: convenience — some MOCs offer a one-click parts list, so you skip the manual matching
Build Experience
The buying experience on Chinese compatible parts channels has improved markedly in recent years. The old complaints — inconsistent colour, clutch that is too tight or too loose — have largely been fixed, and basic-part precision from mainstream brands now sits at 90% or more of LEGO's level. For non-visible parts such as internal structure and frames, domestic parts are entirely up to the job.
The strength of the official LEGO channel is colour accuracy and part longevity. If you have very high standards for the finished look, or you need special colours (sand green, flesh, trans clears and so on), go with genuine LEGO parts first.
Recommended sourcing strategy:
- Frame and internal structure → compatible parts (saves money)
- Outer panels and special colours → genuine LEGO parts (protects quality)
- Retired and rare parts → secondhand market plus BrickLink
- Bulk orders → 1688 or Pinduoduo (better rates at volume)
Finished Model Showcase
MOCs built from a mix of channels look much the same once finished and photographed. One thing to watch is colour consistency — the same colour from different brands can show a visible shade difference, so keep each visible area of the model to parts from a single channel.
Rating
★★★★★ (essential reading)
Knowing where to buy parts is a required skill for every MOC builder. Bookmark the parts-buying guide on BrickPlans — we keep updating the value-for-money data and builder feedback for each channel. Smart builders mix their sourcing: 70% domestic parts plus 30% LEGO parts gets you 95% of the finished look for 50% of the cost.
Recommended brands: LEGO (key parts), Double Eagle, SEMBO, PinQi (basic parts) Parts per order: depends on the MOC project; keep a single order at 200 parts or more to spread the shipping cost Sourcing tip: check the parts list attached to the instructions on BrickPlan.cn and generate a purchase list in one click, instead of matching every piece by hand.
FAQ
Q: What channels are there for buying MOC parts? A: Four main types: LEGO's official Bricks & Pieces (genuine but pricier), Chinese compatible loose parts (best value), the secondhand brick market (good for retired pieces), and parts bundled with instructions.
Q: Which parts should I buy as genuine LEGO? A: Visible panels and special-colour pieces are best bought from LEGO — the colour is accurate and the parts last. If you need sand green, flesh, trans colours or similar specials, or you are very demanding about the finished appearance, prioritise genuine parts.
Q: How good are Chinese compatible parts now? A: Much better than they used to be. The old complaints about inconsistent colour and clutch that is too tight or too loose have been largely resolved, and basic-part precision from mainstream brands is close to LEGO's. They are entirely sufficient for frames and internal structure.
Q: How do I buy MOC parts cheaply? A: Use a combined strategy: compatible parts for the frame and internals to save money, genuine LEGO for visible panels and special colours to protect quality, and the secondhand market for retired and rare pieces. Keep each order at 200 parts or more to spread the shipping cost.