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RG vs MG Gunpla: Which Grade Should You Build?

Real Grade and Master Grade solve the same kit two different ways: one crams incredible detail into a palm-sized 1/144, the other gives you a big 1/100 with a real inner frame. We break down detail, size, difficulty, and price so you build the right grade first.

Devin RossBuild & Technique Editor7 min read · Updated Jul 21, 2026
RG vs MG Gunpla: Which Grade Should You Build?

Every builder who moves past their first High Grade hits the same fork: Real Grade (RG) or Master Grade (MG)? Both are a step up from the entry HG, both are sold as the "serious" builds, and both cost real money, so picking wrong stings. The two grades solve the same problem in opposite directions. RG crams near-Master-Grade detail into a tiny 1/144 shell; MG gives you a large 1/100 with a genuine inner skeleton under the armor. Having catalogued kits across grades with our methodology, here is the honest breakdown of which one belongs on your bench first.

The quick answer

Build the Master Grade if you want a satisfying, forgiving build with big parts, a real inner frame, and articulation you can actually pose: it is the better building experience and the easier one to paint. Build the Real Grade if you want maximum detail on a small footprint at a lower price, and you have the patience (and the nippers) for very small, delicate parts.

Check MG kit prices on Amazon

Head to head

Real Grade (RG)Master Grade (MG)
Scale1/144 (~13 cm)1/100 (~18 cm)
Pricearound $25-35around $40-60
Inner framePre-assembled joint runnerFull separate inner frame
Part sizeVery small, delicateLarge, easy to handle
DetailExtremely high for the sizeHigh, spread over more parts
Build time3-6 hours8-15+ hours
Best forDetail on a small shelf, lower costBest all-round build and paint

Scale and size: the thing photos hide

The single biggest surprise for new builders is how small an RG is. At 1/144 it stands about 13 cm, the same height as a basic High Grade, just packed with far more detail. A Master Grade at 1/100 is noticeably bigger at roughly 18 cm, with parts several times the size. That size gap drives everything else: bigger MG parts are easier to cut off the runner cleanly, easier to sand, easier to paint, and far easier to fix when you make a mistake. RG parts are tiny, and some are genuinely fiddly.

The inner frame: two philosophies

Both grades give you an inner frame, the mechanical skeleton under the outer armor, but they do it differently. The MG frame is a full, separately built structure: you assemble a poseable skeleton, then clip armor onto it, exactly like the real thing in miniature. It is the most satisfying part of Master Grade building and the reason MGs pose so well.

RG uses a pre-assembled frame that comes out of the box already articulated on one runner. It is a marvel of engineering for the price, but it is also delicate: those thin pre-built joints can loosen or, on some kits, snap if you force a pose. You get the look of an inner frame without building one.

Difficulty and the nipper problem

MG is the more forgiving build despite the higher part count, simply because the parts are bigger. RG's difficulty is not the step count, it is the scale of the parts. Some RG pieces are the size of a grain of rice, gates attach at awkward spots, and a slip with a dull cutter can launch a part across the room or leave a stress-white nub you cannot easily sand on something that small.

This is the one place RG demands better tools. A clean, sharp single-blade nipper matters far more on tiny RG parts than on chunky MG armor. If you are building RG, do not cut it with hardware-store side cutters; a proper hobby nipper like the God Hand SPN-120 pays for itself in un-ruined parts. Our best nippers for Gunpla roundup covers the full range, and the two-stage cut in how to remove nub marks is doubly important at 1/144.

Detail and finishing

Out of the box, RG looks incredible for its size: molded color separation, tiny decals, and panel detail that rivals kits twice its scale. MG spreads its detail over more, larger parts, which makes it the better canvas if you plan to paint. Larger surfaces take an airbrush coat more evenly, panel lines are easier to flow and wipe, and decals are less likely to fold on a big flat MG shield than a curved RG one.

Both grades reward panel lining. A wash of Tamiya Panel Line Accent Color into the recesses adds instant depth to either grade, and it is the highest-impact five minutes you can spend on a snap-fit kit. If you are going to paint, the bigger MG parts are simply more pleasant to work; see how to panel line a model for the technique that works on both.

Price

RG runs around $25-35; MG around $40-60 for a standard kit, more for flagship releases. Per hour of building, RG is arguably the better value, because you get a lot of engineering for the money. But MG's larger parts and full frame make it the better first serious kit for most people, because the experience is more forgiving and the result is easier to display and pose. If budget is the deciding factor and you own sharp tools, RG wins on cost.

Which should you build

Build the MG if you want the best overall building experience, plan to paint, value a poseable inner frame, and prefer big, manageable parts. Check MG kit prices on Amazon

Build the RG if you want maximum detail on a small shelf, want to spend less, and are comfortable with very small, delicate parts and the sharp nippers they demand.

Not sure you are ready for either? There is no shame in one more High Grade first: a good HG kit around $20 teaches nub removal and panel lining on forgiving parts before you spend MG money. And to see how a sprue, gate, and nub actually work before you cut, spin the sprue-tree specimen on the bench.

The verdict

RG and MG are not a hierarchy, they are a choice of priorities. Real Grade is a detail showcase in miniature: stunning, affordable, and demanding of your tools and patience. Master Grade is the better build and the better paint canvas: bigger, more forgiving, endlessly poseable, and worth the extra money for most builders stepping up from HG. If you are buying your first big kit and want to enjoy the process, start with a Master Grade. Chase the Real Grade when detail-per-dollar on a small shelf is what you are after. Compare where both land against the rest of the field on our best-of hub.

A quick, honest note: some links on this page are affiliate links. As an Amazon Associate we may earn a commission when you buy through them — at no extra cost to you. It never changes the price you pay.

Questions builders ask

Is RG or MG better for a beginner?

Master Grade is the friendlier step up for most beginners despite having more parts. The parts are bigger, easier to cut cleanly, easier to sand, and easier to paint, and the full inner frame makes assembly feel logical. Real Grade packs amazing detail into a 1/144 body, but its tiny, delicate parts and pre-built joints are less forgiving of mistakes and demand sharper tools. If this is your first kit above High Grade, an MG is usually the more enjoyable build.

What is the difference between RG and MG Gunpla?

Scale and structure. Real Grade is 1/144 (about 13 cm) with a pre-assembled inner frame packed with fine detail. Master Grade is 1/100 (about 18 cm) with a full, separately built inner skeleton you clip armor onto. RG is smaller, cheaper, and more detailed for its size; MG is larger, pricier, more poseable, and a better canvas for painting. Neither is higher than the other, they optimize for different things.

Do you need glue for RG or MG kits?

No. Both Real Grade and Master Grade are snap-fit, so they click together without cement like all modern Gunpla. You will want good nippers to remove parts cleanly and, optionally, cement only if you choose to remove seam lines on painted builds. For a straight snap build of either grade, nippers and a little panel lining are all the tools you truly need.

Are Real Grade kits hard to build?

Not in step count, but in scale. RG parts are very small and some pre-built joints are delicate, so a dull cutter or a heavy hand causes more grief than it would on a big Master Grade part. With a sharp single-blade nipper and the patience to cut proud and flush-cut the nub, most builders handle an RG fine; just give yourself good light, good tools, and a slow afternoon.

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