During the opening carnival house duel, both arms fall off of the Al Capone wax dummy despite the fact that he only shot one bullet. As 'Al' was cradling a 1928 Thompson 'Tommy-gun', a tug from one arm and the weapon could have pulled the other arm off of the mannequin.
When we first meet the two karate schoolgirls (Hip's nieces) in the back of the car, they are supposed to be carrying on a conversation, but the audio track simply repeats three times the following two sentences in Mandarin Chinese (spoken presumably by the two girls): "How are you?" and "That's what I think". Of the two actresses, only Qiu Yuen is Chinese; Joie Vejjajiva is Thai.
When Scaramanga shoots the fingers off the statue/dummy of Bond, only three shots are heard, and Scaramanga can only be seen to fire three times, but all four fingers are shot off. In addition, only two fingers are seen shot off in the view from behind the statue/dummy before the angle changes, but a third finger is already missing after cutting to a close-up of the hand, before the fourth finger is then shot off.
When Bond adopts a third nipple "disguise" in order to appear as Scaramanga to Hai Fat, his extra nipple is in an anatomically impossible location. Extra nipples are always found in the "milk line," which runs vertically between the normal nipple and the groin crease. Bond places his extra nipple medial to his normal one - a dead giveaway that it's a fake.
When Bond goes to Macau to see Lazar, he approaches an Asian woman and two children and asks where Lazar is, holding a piece of paper and saying it slowly indicating that he does not know how to speak their language. However, in the film You Only Live Twice, Bond tells Moneypenny that he took a first in Oriental languages at Cambridge.
When the ballistics expert examines the bullet, he declares the mass to be 20.53 grams (316 grains). Even though 23 carat gold is somewhat denser (1.67:1) than the lead alloy used in modern arms, this is still almost thirteen times as massive as the largest 17 caliber bullets manufactured (25 grains). It would look more like a thick needle than a bullet, being nearly two and three quarters inches in length and would be nearly impossible to stabilize.
When Bond is trying to get the Solex out of its housing, the solar beam is activated and he calls to Goodnight to switch it off. Looking at the control panel, she calls out; "Computer interlock - Is that it?", but the wording on the panel reads; "Computer lock out".
When Goodnight accidentally backs into the Master Override switch Bond asks her to look for a control to deactivate the device. She searches the panel but the description on the part of the panel she reads in no way matches what she says.
When Nick Nack is at his console watching Scaramanga in his 'Funhouse' he has screens showing different sections of it. When we see the cameras they are all panning constantly from side to side. However, all the shots on Nick Nack's screens are static shots of one angle.
When Bond is chasing Scaramanga through the streets of Bangkok, there is a scene in which they pass a cab driver in a 1955 Plymouth sedan. When the cab driver runs off the road and rolls his car over, it has changed to a 1955 Cheverolet Bel-Air.
In the hotel when Miss Anders and Bond first meet, Miss Anders' wet hair switches between being pushed back neatly to hanging around her face and back. When the camera is facing Miss Anders', her hair is brushed back from her face. When the camera is facing Bond, her hair appears to be hanging down close around her face. This switch occurs several times during the scene.
Scaramanga tells Bond that only two live on his island (himself and Nik Nak), but shortly afterwards he points out the technician who runs the power plant, meaning there are actually three full-time residents.
When Bond arrives on Scaramanga's island, Scaramanga shoots the cork off the bottle of champagne on a platter that Nick Nack is holding. Champagne shoots up out of the bottle neck, partially filling the adjacent glass and wetting Nick Nack's hair. After the next cut, the glass is empty and Nick Nack's hair is dry.
During the car chase between the red car (Bond's) and the bronze car (Scaramanga's), there is a view taken from a driver's perspective inside the car, and the rear view mirror is missing from its mounting point. Later in the chase both cars clearly have the rear view mirror in place.
There is other traffic around the overturned taxi as it appears to the approaching police cars, including a white Toyota Crown which pulls to the left and stops. When the police cars crash into the taxi, all of the other vehicles are gone.
Upon impact, the first police car that hits the overturned taxi has no windows open, and the driver is wearing a seat belt but no cap. In the next shot, the driver's window is open, and the officer inside is wearing a cap but no seat belt.
After Goodnight is locked in the boot of the car she tells Bond where she is, Bond and Hip go to their car as Scaramanga drives past them, they then discover that the have not got the car keys and Goodnight tells them (on the radio) that she has it a passage of time lasting many seconds,Bond and Hip then get out of the car to see that the car which Goodnight is in has only moved a couple of feet.
During the fight in Beirut a bumped mirror shows a camera man, someone standing over the camera, and studio lighting. (This is noted in the commentary on the re-release DVD. It could have been corrected when the film was remastered, but they decided to leave it in.)
In the establishing shot of Hai Fat's hillside house, patches of light dart about on the ornate arch/frontage. This is from hand-held reflective panels, held by crew members out of sight (off the bottom corners of the image), who are trying to give the booklet guards some light/contrast on their faces.
The flying car is supposedly found "200 miles west of Bangkok", which would put it somewhere off the coast of Burma. Also, the island they are head for is said to be about eight hours' sail from Hong Kong, at least 1,000 miles from Bangkok in the other direction.
On the map that is produced to show the location of Scaramanga's island, the islands in the archipelago are clearly marked out as 'Ko', meaning 'island' in Thai. This correlates with the real location of the island that was used in the film, but does not correlate with the film's pretense of the islands being near Hong Kong.
After the Bottoms Up Club scene, Lieutenant Hip tells Bond that they are going to "Kowloon side." He then says "We're going to the New Territories" as they ride the boat across Victoria Harbor. But the Bottoms Up Club is actually located in Kowloon, and Kowloon is part of the New Territories.
Absolute zero cannot be "maintained" since it has never been "reached". Even if that were permissible in the movie, it wouldn't require a man's body temperature to raise it, as the temperature of the surrounding air would already have done the trick.
JW Pepper identifies himself as "Sheriff JW Pepper of the Louisiana State Police". In Louisiana, as in other states, the Sheriff's Department & the State Police are two completely different police forces, and there is no "Sheriff" in the State Police. The Sheriff is an elected official responsible for a parish (county) whereas the State Police are responsible for the entire state.
Gold, especially pure gold, is a very soft metal which is damaged easily. It's hard to imagine a worse material to use as bullet casing which requires a very robust metal to withstand the explosion of the gunpowder used to propel it.
It is said during the duel that the Golden Gun can fire only one bullet, yet at the beginning of the movie Scaramanga shoots the fingers off of the Bond dummy using multiple bullets. That's because he's using his dead opponent's gun.
The tilted angle of the Queen Elizabeth as seen from the outside is different than from the inside. This isn't properly an error, as the fire that destroyed the ship could have caused support members to melt, creating different angles to assorted decks.
At the dinner following Bond's arrival on the island, the golden gun parts are shown disassembled next to Scaramanga's dinner plate, in the following two scenes Bond and Scaramanga are briefly shown talking and neither is doing anything with their hands, but in the next scene Scaramanga suddenly levels a fully-assembled golden gun at Bond, without having even assembled the parts.
That's not true. When Bond doesn't react the way Scaramanga expected or hoped, you can clearly see, that he takes the Parts for the Golden Gun from the Table and starts to combine the Parts, without Bond noticing. When Bond grabs for his Walther, Scaramanga reveals his Golden Gun, just built under the Table.
James Bond's identity and status within the British Secret Service are known by too many non-privileged people in this movie. The gun-maker even says that "your reputation precedes you". In a realistic spy service, an agent who attracted this kind of specific attention would be considered to have "blown his cover." Surprisingly, all this fame somehow does not constitute a problem for Bond.
Scaramanga seeks the Solex Agitator, a device needed to run his island hideout. However, his island is powered before attaining it. Additionally, he would have had to construct an elaborate yet inoperable solar energy facility under the pretense that the missing piece will soon be invented, putting the buggy before the horse, akin to creating a nuclear reactor before discovering uranium.
The lieutenant and his nieces go to where Bond is being held at the karate school for the express purpose of rescuing him and after fighting off his captures they drive off leaving him there, some rescue.
The writers clearly seem unaware of some aspects of Asian culture. Both Bond and Scaramanga refer to Hai Fat as "Mr. Fat." Surely the two men are worldly enough to know that in many East Asian countries, the surname comes first; therefore, they should have said "Mr. Hai." Also, Hip says his brother runs a karate school; karate is Japanese, not Thai. While it is not impossible that someone might run a karate school in Bangkok, it seems far more likely that the writers just assumed that all martial arts forms come from some nebulous place called "Asia."
When Bond enters hotel Room 602 the shot from the hallway shows the door less than a foot from the door for Room 600, but the shot from inside the room shows a large (roughly 8 foot wide) entryway with the door in the center.
During the opening sequence where Scaramanga has just shot the henchman, if you speed up the frames you can clearly see that the James Bond "dummy" is actually Roger Moore himself as he is naturally shaking attempting to keep his balance. Also, the position of his hands and fingers change frame by frame: in the first shot his hand is low and fingers in a fist shape. Next (when Scaramanga shoots the fingers) they are open and his hand is higher.
When Goodnight is hiding under the covers, hiding in the closet, and hiding in the trunk, there is obviously an alternate light source being used. The closet is especially obvious, as there is no light source inside the closet, and the doors are solid.
When Bond and Knick Knack are fighting in the junk's bedroom, Knick Knack throws several sealed, unopened wine bottles at Bond, which he smashes to pieces with a broken chair. However, each smashed wine bottle is empty - not a drop was spilled.
When the flying car is shown in the hangar. There is cloth hanging in front of the engine intake. The jet engine is clearly heard running, yet the cloth is not being sucked into the engine. Also as the flying car pulls out from behind the cloth, it just hangs straight back down. Clearly showing there's no exhaust coming from the engine.
Immediately after James Bond and J.W. Pepper flip their car over the river, Pepper is seen falling and rolling around on a solid grey surface that does not match the interior of the car. In the next shot from inside the car, he is stretched flat from the front to the rear on top of differently patterned upholstery.
In the final fight between Bond and Nick Nack, Bond is dressed in a robe and is barefooted. After a number of wine bottles are broken, throwing glass all over the bedroom floor, Bond locks Nick Nack into a suitcase and takes him outside, never putting on any footwear. Then he returns to Goodnight in the bedroom and walks through it without even watching where he's walking, never stepping on any glass and cutting his feet.
At Scaramanga's island lair, when he is demonstrating his "Solex" to Bond, a horizontal crease in the sky backdrop is clearly visible during cutaway shots of the "mushroom-shaped rock" as the solar mirror mechanism emerges from it.
Scaramanga pulls into the hangar after the chase with bond, and the scene shows "clip-on" wings being attached to the 1974 AMC Matador. However, the "flying" version of the AMC is a completely different model, having wing supports laterally along the roof of the car that were not there in the "ground" version.
Scaramanga shoots the solar agitator inventor square between the eyes from across the street with a piston (the golden gun), from an upper story window. Given the distance and angle, that is an impossible shot for even the most fantastic marksman.
During the first sword fight scene at the martial arts Dojo, there are a few mistakes. The fighter in yellow mounts the fighter in red. The fighter in red appears to slash him with his sword, and send him flying backwards. Both the fighter's yellow uniform and the sword appear to be covered in very dried blood, as if it had been there for hours. Also, the trajectory of the blade was horizontal, and there are no horizontal slashes in the fighter's uniform.
At the fight, after Bond finds Anrea (Maud Adams) dead with her eyes frozen open, he has a conversation with Scaramanga. During their dialog, Maud Adams blinks to the left of Bond, and her long lashes are caught in frame visibly moving.
The goof items below may give away important plot points.
Just before Bond stuffs Nick Nack into the suitcase on the junk. You hear his muffled voice saying "Hey, what are you doing? Let me out" even though he isn't in the case yet and you can clearly see his mouth and he's not speaking.
During the bottle fight between Nick Nack and Bond, the first time Nick Nack picks two bottles at once, one has gold foil and one has red foil. He throws the red foil one first but if you watch in slow motion, Bond actually hits a bottle with gold foil.
During the scene where Andrea Anders gets shot at the kick boxing match. Every so often the camera cuts to to fighters kick boxing. At the last time the camera cuts to the fighters at the end of the bout. Each fighter is wearing ties on their biceps, where they hadn't before during the bout.
Bond passes a lawn ornament holding a pitch fork. Later on, it is revealed to be Nick Nack in disguise. Not only is it obvious that they switched the statue for the real actor in between camera angles, but the position in which Nick Nack is holding the pitch fork is much higher than the original statue.