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P-51 Mustang: P-51B vs P-51D vs F-51D and the Kits to Build
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The P-51 Mustang is the fighter most people picture when they think of the American air war over Europe. But "a Mustang" can mean several quite different aircraft. A P-51B with a framed canopy and four guns, a bubble-canopy P-51D in polished metal, and a Korean War F-51D loaded with rockets all need different paint, different markings and, often, a different kit. This guide explains how to tell them apart and which kits in our catalog show each one.
From Allison to Merlin: a short history
North American Aviation designed the Mustang in 1940 for the British, who needed more fighters than their own factories could build. The first Mustangs used the American Allison V-1710 engine. They were fast and handled well at low level, but the engine lost power at high altitude. The RAF used these early Mustangs mostly for low-level reconnaissance and ground attack.
The turning point came in 1942, when the airframe was fitted with the Rolls-Royce Merlin, an engine with a two-stage supercharger that kept its power high up. In the United States the Merlin was built under license by Packard as the V-1650. The result was the P-51B (built in California) and the near-identical P-51C (built in Texas). With drop tanks, these Mustangs could fly with the bombers all the way to targets deep in Germany and back, which the US Army Air Forces badly needed after heavy bomber losses in 1943.
The P-51D followed in 1944 and became the most-produced version, with roughly 8,000 built. In total, more than 15,000 Mustangs of all versions were made. After the war the Mustang stayed in service, and when the new US Air Force changed its designations in 1948, the "P" for pursuit became "F" for fighter. That is why the same airplane is called an F-51D in the Korean War.
How to tell a P-51B from a P-51D
Three features give it away from almost any angle: the canopy, the fuselage spine behind the cockpit, and the guns in the wings.
- Canopy. The P-51B has a framed canopy with a hinged top panel and a side panel that opens. Many B and C models in England were refitted with the British Malcolm hood, a bulged, sliding canopy that gives a much better view. The P-51D has a one-piece clear bubble canopy that slides back.
- Fuselage spine. On the B, the fuselage behind the cockpit rises to a tall, narrow ridge (a "razorback"). To fit the bubble canopy, the D's rear fuselage was cut down, so the line behind the pilot drops away. Later P-51Ds also gained a small fin fillet, a curved strip running forward from the base of the tail fin, and some B models received it too.
- Guns. The P-51B carries four .50-caliber machine guns, two in each wing, mounted at a tilt. The tilted mounting was prone to jams in hard turns. The P-51D carries six .50-caliber guns, three per wing, mounted upright. Count the gun ports on the leading edge of the wing.
- Wing root. The D's wing has a slight forward extension at the root of the leading edge, next to the fuselage. It is subtle but easy to see on a side-by-side photo.
The F-51D is externally the same airplane as a late P-51D. What separates them on a model is the era: markings, insignia and the weapons hung under the wings.
| Version | Era | How to spot it | Kits in our catalog |
|---|---|---|---|
| P-51B / C | Late 1943 to 1944 | Framed or Malcolm canopy, razorback spine, four guns | Tamiya 1/48 P-51B (61042), COBI P-51B block set |
| P-51D | 1944 to 1945 | Bubble canopy, cut-down spine, six guns | Tamiya 1/72 (60749), 1/48 8th Air Force (61040), 1/32 (60322); Revell 1/32 (03944); COBI sets |
| F-51D | Korean War, 1950 to 1953 | Same shape as P-51D; postwar insignia with red bar, rockets and bombs under the wings | Tamiya 1/72 (60754) and 1/48 (61044) Korean War kits |
The P-51B: the escort that started it
The P-51B is the Mustang for builders who like the less obvious choice. It flew the long escort missions of early 1944, including the raids on Berlin that spring. Many early P-51Bs were delivered in olive drab upper surfaces over neutral grey undersides, while later ones were left in bare metal. If you build one in olive drab, you avoid the challenge of a natural-metal finish, which makes it a friendlier first Mustang than you might expect.
Tamiya P-51B Mustang
A 1/48 P-51B from Tamiya, whose WWII fighter kits are known for clean fit and clear instructions. It lets you show the razorback fuselage and framed canopy that set the early Merlin Mustang apart. Look at the listing photos to see which canopy options are in the box.
Check price on AmazonThe P-51D and its markings
The P-51D began reaching England in numbers in the spring of 1944. Most were left unpainted, apart from an olive drab anti-glare panel ahead of the windshield. Some units added dark green paint to the upper surfaces in the field, so a painted D is also accurate for some aircraft.
8th Air Force nose colors
The fighter groups of the 8th Air Force in England painted bright colors on the spinner and nose so their pilots could recognize friendly aircraft. A few famous examples: the 4th Fighter Group used red noses, the 352nd Fighter Group blue noses, and the 357th Fighter Group red and yellow checkers. Tails often had colored rudders or bands too. If you want to paint a specific aircraft, find a photo of it first, because markings changed during the war even within the same group.
Invasion stripes
For the Normandy landings in June 1944, Allied aircraft were painted with black and white bands around the wings and rear fuselage: three white and two black. They helped ground gunners and ships recognize friendly aircraft. Within weeks they were removed from the upper surfaces, and by late 1944 most had disappeared from the undersides as well. Full stripes therefore date a model to the summer of 1944. Mask them with tape rather than relying on decals; painted stripes wrap neatly around the fuselage and over panel lines.
The Tuskegee Airmen
The 332nd Fighter Group, the Tuskegee Airmen, flew Mustangs with the 15th Air Force in Italy. Their aircraft carried the red tails that gave them their nickname. It is a popular and meaningful subject for a P-51D build.
Tamiya P-51D Mustang, 8th Air Force
The classic 1/48 P-51D in 8th Air Force markings. It is a straightforward, well-proven Tamiya kit and a natural first aircraft model. It works for bare metal, painted, or invasion-striped schemes.
Check price on AmazonThe F-51D in Korea
When the Korean War began in 1950, the Mustang went back into combat. By then jets were taking over air combat, so the F-51D was used mainly for close support of troops on the ground, carrying bombs, napalm tanks and rockets. Besides the US Air Force, Mustangs flew in Korea with the Royal Australian Air Force, the South African Air Force and the Republic of Korea Air Force.
The giveaways for a Korean War Mustang are the markings. US aircraft carried the postwar national insignia, a star and bars with a red stripe in the bar, adopted in 1947, plus "USAF" lettering on the wings. Most were bare metal with colored squadron trim on the spinner and tail. The underwing load of rockets is what makes an F-51D look different on the shelf.
Tamiya F-51D Mustang, Korean War
A 1/48 F-51D built for the Korean War, so the kit is aimed at the ground-attack role rather than the 1944 escort mission. Choose it if you want something different from the usual 8th Air Force Mustang. Check the listing photos for the underwing stores and marking options.
Check price on Amazon1/72 vs 1/48 vs 1/32: which Mustang size?
The Mustang had a wingspan of about 11.3 meters and a length of about 9.8 meters. That gives these finished sizes:
- 1/72: about 16 cm span. Small, quick and cheap to collect. Tamiya makes both a P-51D (60749) and an F-51D (60754) in this scale, so you can build a WWII and a Korea Mustang side by side. Small parts and decals need more care.
- 1/48: about 24 cm span. The best balance of detail and ease for most builders, and the only scale in our catalog with the P-51B, D and F-51D all available from the same maker.
- 1/32: about 35 cm span. A big, impressive model. Tamiya's 1/32 P-51D (60322) is known as one of the most detailed and complex plastic Mustang kits, aimed at experienced builders. Revell's 1/32 P-51D (03944) is the more approachable way into this size.
Our scale guide explains how scales compare across tanks, ships and aircraft.
Tamiya P-51D Mustang
Tamiya's 1/32 P-51D is a showpiece kit with a reputation for engineering and detail. It suits a builder with several kits behind them who wants a single large centerpiece. Expect a longer, more involved build than a 1/48 kit.
Check price on Amazon
Tamiya P-51D Mustang
Tamiya F-51D Mustang, Korean War
Revell P-51D Mustang
Build tips for Mustangs
- Bare metal starts with a smooth surface. Metallic paint shows every scratch and seam. Sand seams carefully, polish with fine sanding sponges, and spray a gloss black base before the silver. Vary the shade slightly between panels for a realistic look.
- Paint the anti-glare panel. Even on a bare-metal Mustang, the area ahead of the windshield was painted olive drab to cut glare.
- Mask the invasion stripes in order. Spray the white first, mask it, then the black. White covers poorly over dark colors.
- Gear doors. Photos of parked Mustangs often show the large inner main gear doors hanging open, because they drooped once hydraulic pressure bled off. Either position can be correct; pick one and match a reference photo.
- No nose weight needed. The Mustang is a tail-dragger, so it sits correctly without extra weight.
Tip: A gloss coat over the metal before decals helps them settle, and a final satin coat over the painted areas keeps the olive drab panel from looking too shiny next to the metal.
Block sets and RC Mustangs
If you want a Mustang without glue or paint, block sets are the easy route. COBI makes both a P-51B and a P-51D, so the canopy and spine differences carry through even in bricks. COBI also makes P-51D sets tied to Top Gun: Maverick, because Tom Cruise's own P-51D appears in that film. Read more in our block set guide, and see the F-14 Tomcat guide for the rest of the Top Gun connection.
The Mustang is also one of the most common RC warbird shapes. Foam park flyers with stabilization are a good first step; see RC warbirds for beginners before you buy.
COBI P-51B Mustang, 155 Pieces
COBI P-51D Mustang, 150 Pieces
COBI Top Gun: Maverick P-51D Mustang, 350 Pieces
Volantex P-51D Mustang 4-Channel
Quick answers
What is the difference between a P-51D and an F-51D?
Nothing structural. The US Air Force renamed pursuit aircraft as fighters in 1948, so P-51Ds still in service became F-51Ds. On a model, the difference is the postwar markings and Korean War weapons.
Which Mustang kit should a beginner build?
The Tamiya 1/48 P-51D (61040) is the usual choice. It is a simple, well-fitting kit of the most famous version. If you want to avoid a metal finish, the P-51B in olive drab is a good alternative.
Were all P-51Ds silver?
Most were left in bare metal, but some units painted the upper surfaces dark green in the field, and all had an olive drab anti-glare panel. Check a photo of the aircraft you want to model.
Why did the P-51B have only four guns?
The thin wing of the original design had room for two guns per side, mounted at a tilt. The P-51D's revised wing fitted three guns per side, mounted upright, which also reduced jamming.
Do I need a different kit for invasion stripes?
No. Any P-51B or P-51D from mid-1944 can carry them. Many kits include stripe decals, but masking and painting them usually looks better.
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