How long is a 1911 pistol? A full-size 1911 Government model is 8.25 to 8.7 inches long (20.96 to 22.10 cm). The exact length depends on the maker and the model: the original military M1911 measures 8.25 inches (20.96 cm), a Colt Series 70 Government measures 8.5 inches (21.59 cm), a Springfield Armory Mil-Spec measures 8.6 inches (21.84 cm), and a Kimber Custom II measures 8.7 inches (22.10 cm). A full-size 1911 weighs about 38 to 39 ounces (1,077 to 1,106 g) unloaded and stands 5.25 to 5.5 inches tall (13.34 to 13.97 cm).
The 1911 is the most searched pistol in the United States. It was designed by John Browning and adopted by the US Army in 1911, which is where the name comes from. It served as the standard US military sidearm from 1911 to 1985, a run of 74 years, before the Beretta M9 replaced it. About 2.7 million M1911 and M1911A1 pistols were built for the US military, and makers like Colt, Kimber, Springfield Armory, Smith & Wesson, Ruger and SIG Sauer still build their own versions today.
Every 1911 follows the same basic shape: a single-action, semi-automatic pistol with a steel frame and slide, a grip safety and a thumb safety. The differences between models are small — a longer beavertail grip safety here, taller sights there — and those small parts are why the overall length ranges from 8.25 to 8.7 inches instead of being one fixed number.
1911 Pistol Length at a Glance
| Measurement | Inches | Centimeters | Millimeters |
|---|---|---|---|
| Barrel length (Government model) | 5.03 in | 12.78 cm | 127.8 mm |
| Overall length, original M1911 | 8.25 in | 20.96 cm | 209.6 mm |
| Overall length, Colt Series 70 | 8.5 in | 21.59 cm | 215.9 mm |
| Overall length, Springfield Mil-Spec | 8.6 in | 21.84 cm | 218.4 mm |
| Overall length, Kimber Custom II | 8.7 in | 22.10 cm | 221.0 mm |
| Overall length, Commander (4.25 in barrel) | 7.75 in | 19.68 cm | 196.8 mm |
| Overall length, Officer (3.5 in barrel) | 7.5 in | 19.05 cm | 190.5 mm |
| Height (Government model) | 5.25–5.5 in | 13.34–13.97 cm | 133.4–139.7 mm |
| Width (Government model) | 1.25 in | 3.18 cm | 31.8 mm |
| Weight, Government (unloaded) | 38–39 oz | — | 1,077–1,106 g |
| Bullet diameter (.45 ACP) | 0.451 in | 1.15 cm | 11.46 mm |
Quick tip: overall length varies by maker because of the beavertail grip safety, the sights and the hammer. Two full-size 1911 pistols with the same 5-inch barrel can differ by almost half an inch, so always check the manufacturer’s listed overall length for the exact model.
How Long Is a 1911 Pistol with a 5-Inch Barrel?
A 1911 pistol with a 5-inch barrel is 8.25 to 8.7 inches long. That is 20.96 to 22.10 centimeters, or 0.69 to 0.72 feet. The 5-inch barrel itself is 12.7 centimeters (127 mm) long, and the official Government barrel length is 5.03 inches (12.78 cm).
The range exists because makers finish the same basic pistol differently. The original military M1911 is the shortest at 8.25 inches (20.96 cm), with a short grip safety and small military sights. Modern versions add a beavertail grip safety, taller sights and a longer hammer, and each part adds a fraction of an inch.
Here is how the best-known full-size models compare:
- Colt Series 70 Government Model: 5-inch barrel, 8.5 inches overall (21.59 cm), 5.5 inches tall (13.97 cm), 1.25 inches wide (3.18 cm), 39 ounces (1,106 g) unloaded. Chambered in .45 ACP with an 8-round magazine.
- Kimber Custom II: 5-inch match-grade barrel, 8.7 inches overall (22.10 cm), 5.25 inches tall (13.34 cm), 38 ounces (1,077 g) with an empty magazine, 7+1 capacity.
- Springfield Armory 1911 Mil-Spec: 5-inch match-grade stainless steel barrel, 8.6 inches overall (21.84 cm), 5.5 inches tall (13.97 cm), 39 ounces (1,106 g) unloaded, 7+1 capacity.
The difference between the shortest and the longest full-size 1911 is 0.45 inches, about the width of a fingertip, so any of them feels the same size in the hand. The 5-inch barrel also gives the longest sight radius in the standard 1911 lineup — about 6.8 inches (17.27 cm) on a Kimber TLE II — which is one reason the full-size model is the most accurate of the three frame sizes.
1911 Barrel Lengths: 5 Inches, 4.25 Inches and 3.5 Inches
The 1911 comes in three main frame sizes. The Government is the full-size original, the Commander is the mid-size version, and the Officer is the compact version. All three fire the same .45 ACP cartridge, but each step down in barrel length makes the pistol shorter, lighter and easier to carry.
- 5-inch barrel (Government model): the original full-size 1911. Overall length is 8.25 to 8.7 inches (20.96 to 22.10 cm), height is 5.25 to 5.5 inches (13.34 to 13.97 cm), and weight is 38 to 39 ounces (1,077 to 1,106 g) unloaded. Magazine capacity is usually 7+1 or 8+1 rounds. This is the range gun and home-defense size.
- 4.25-inch barrel (Commander model): introduced by Colt in 1949 as a lighter pistol for officers. Overall length is 7.75 inches (19.68 cm), 0.5 to 0.95 inches shorter than a Government model. Height is 5.5 inches (13.97 cm) on current Colt models, because the Commander keeps the full-size grip and the same 8+1 capacity. Weight depends on the frame: the aluminum-frame Lightweight Commander is 27 to 29 ounces (765 to 822 g), while the steel Combat Commander is 33 to 36 ounces (936 to 1,021 g).
- 3.5-inch barrel (Officer model): introduced by Colt in 1985 as a concealed-carry 1911. Overall length is about 7.5 inches (19.05 cm), which is 0.75 to 1.2 inches shorter than a Government model. Note that the original 1985 Colt spec sheet listed 7 1/8 inches (18.10 cm), so older references show a slightly shorter number. Height drops to 5.125 inches (13.02 cm) because the grip frame is shortened, and capacity drops to 6+1 rounds. Weight is 34 ounces (964 g) for the steel version and 24 ounces (680 g) for the aluminum-frame Lightweight Officer’s ACP, which is 10 ounces lighter.
Some makers also build a 3-inch barrel Defender on the same Officer-size frame, but the 3.5-inch Officer is the classic compact size and the one most makers copy.
How Much Does a 1911 Pistol Weigh?
A full-size steel 1911 Government model weighs about 38 to 39 ounces (1,077 to 1,106 g) unloaded, which is 2.38 to 2.44 pounds (1.08 to 1.11 kg). The original military M1911 weighs 39 ounces (1,106 g) empty with its magazine. A Kimber Custom II weighs 38 ounces (1,077 g) with an empty magazine, and a Springfield Mil-Spec weighs 39 ounces (1,106 g) unloaded. A loaded 8-round magazine adds roughly 6 ounces of ammunition, so a ready-to-shoot Government model is about 44 to 45 ounces, or about 2.75 to 2.8 pounds.
The weight drops as the pistol gets smaller. A steel Combat Commander weighs 33 to 36 ounces (936 to 1,021 g), an aluminum-frame Lightweight Commander weighs 27 to 29 ounces (765 to 822 g), and a steel Officer weighs 34 ounces (964 g) while the aluminum Lightweight Officer’s ACP weighs just 24 ounces (680 g). Even the lightest full-size 1911 is heavier than most modern polymer pistols, and that weight is part of the design: the all-steel frame soaks up the recoil of the .45 ACP cartridge, which is why the 1911 is known for being comfortable to shoot despite its big bullet.
How Big Is the .45 ACP Cartridge?
The 1911 was built around the .45 ACP cartridge, which John Browning designed in 1905. ACP stands for Automatic Colt Pistol. The cartridge is short and fat compared with a 9mm round, and its size is the reason the 1911 grip is as wide as it is.
- Bullet diameter: 0.451 inches (11.46 mm)
- Case length: 0.898 inches (22.81 mm)
- Overall cartridge length: 1.275 inches (32.4 mm)
- Maximum pressure (SAAMI): 21,000 psi
- Common bullet weights: 185 to 230 grains (12.0 to 14.9 g)
- Standard military load: a 230-grain bullet (14.9 g) at about 830 feet per second (253 m/s)
The .45 ACP is a low-pressure cartridge by modern standards, which is why it feels like a slow push rather than a sharp snap when fired. Its big 0.451-inch bullet is about 0.1 inches wider than a 9mm bullet, which fires a 0.355-inch projectile. That width is the whole point of the cartridge: a large, heavy bullet moving at moderate speed.
1911 vs Glock 19: How Much Bigger Is a 1911?
The Glock 19 is the most common modern comparison for the 1911, because it is the best-selling compact 9mm pistol in the United States. The two show how much handgun design has changed in a century: the 1911 is an all-steel, single-action pistol from 1911, and the Glock 19 is a polymer-frame, striker-fired pistol from 1988.
A Glock 19 Gen 5 has a 4.02-inch barrel (10.21 cm), an overall length of 7.28 inches (18.49 cm), a height of 5.04 inches (12.80 cm), a width of 1.26 inches (3.20 cm) and a weight of 23.63 ounces (670 g) with an empty magazine. Against a full-size 1911, the differences are:
- Length: the 1911 is 0.97 to 1.42 inches longer than the Glock 19 (8.25 to 8.7 inches against 7.28 inches).
- Height: the 1911 is 0.21 to 0.46 inches taller (5.25 to 5.5 inches against 5.04 inches).
- Weight: the 1911 is 14.37 to 15.37 ounces heavier (38 to 39 ounces against 23.63 ounces), which is about 407 to 436 grams. The steel 1911 weighs about 60 percent more than the polymer Glock.
- Barrel: the 1911 barrel is 0.98 inches longer (5 inches against 4.02 inches).
- Capacity: the Glock 19 holds 15+1 rounds of 9mm, while a standard 1911 holds 7+1 or 8+1 rounds of .45 ACP.
- Width: almost the same — 1.25 inches for the 1911 against 1.26 inches for the Glock 19.
The Commander-size 1911 is a closer match: at 7.75 inches long it is only 0.47 inches longer than the Glock 19, and a Lightweight Commander at 27 to 29 ounces is only 3.4 to 5.4 ounces heavier.
Everyday Size Comparisons: How Long Is a 1911 Pistol Really?
A number like 8.7 inches is hard to picture on its own. Here is how a full-size 1911 pistol, at 8.25 to 8.7 inches long, compares with things you already know.
US Dollar Bill
A US dollar bill is 6.14 inches long (15.60 cm). A full-size 1911 is 2.11 to 2.56 inches longer than a dollar bill, or about 1.34 to 1.42 times as long.
Unsharpened Pencil
A standard unsharpened pencil is 7.5 inches long (19.05 cm). A full-size 1911 is 0.75 to 1.2 inches longer than a new pencil. The Officer model, at about 7.5 inches, is almost exactly the same length as a pencil.
Credit Card
A standard credit card is 3.37 inches long (85.6 mm). A full-size 1911 is about 2.45 to 2.58 times as long as a credit card.
Soda Can
A standard 12-ounce soda can is 4.83 inches tall (12.27 cm). A full-size 1911 is 3.42 to 3.87 inches longer than a soda can is tall, or about 1.7 to 1.8 times as long.
A4 Sheet of Paper
A sheet of A4 paper is 11.69 inches long (29.7 cm). A full-size 1911 is 2.99 to 3.44 inches shorter than an A4 sheet, or about 71 to 74 percent of the paper’s length.
Standard Ruler
A standard ruler is 12 inches long (30.48 cm). A full-size 1911 is 3.3 to 3.75 inches shorter than a ruler, or about 69 to 72 percent of the ruler’s length. The pistol runs from the zero mark to just past the 8-inch line.
Frequently Asked Questions
How long is a 1911 pistol?
A full-size 1911 Government model is 8.25 to 8.7 inches long (20.96 to 22.10 cm), with a 5-inch barrel (12.7 cm) and a weight of about 38 to 39 ounces (1,077 to 1,106 g) unloaded. The Commander version with a 4.25-inch barrel is 7.75 inches long, and the Officer version with a 3.5-inch barrel is about 7.5 inches long.
How long is the barrel on a 1911?
The standard full-size Government model has a 5-inch barrel (12.7 cm), officially 5.03 inches (12.78 cm). The Commander has a 4.25-inch barrel (10.80 cm) and the Officer has a 3.5-inch barrel (8.89 cm).
Is a 1911 bigger than a Glock 19?
Yes. A full-size 1911 is 0.97 to 1.42 inches longer than a Glock 19 (8.25 to 8.7 inches against 7.28 inches) and 14.37 to 15.37 ounces heavier (38 to 39 ounces against 23.63 ounces). The two pistols are almost the same width, 1.25 inches against 1.26 inches.
Conclusion
A 1911 pistol in full-size Government form is 8.25 to 8.7 inches long (20.96 to 22.10 cm) with a 5-inch barrel (12.7 cm), stands 5.25 to 5.5 inches tall (13.34 to 13.97 cm) and weighs about 38 to 39 ounces (1,077 to 1,106 g) unloaded. That makes it about a third longer than a dollar bill, a little longer than a new pencil and roughly 70 percent of a standard ruler. The Commander shrinks it to 7.75 inches and the Officer to about 7.5 inches, but every version fires the same 1.275-inch .45 ACP cartridge. After more than a century in production, the 1911 is still the most searched pistol in the United States — long enough for a full grip and a long sight radius, heavy enough to tame the recoil, and still short enough to carry.
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Hi, I’m Michael Carter, I write simple, everyday size guides so you can picture any measurement in seconds.
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