What Does ACP Mean in Guns? A Comprehensive Guide
When it comes to firearms, you may have come across the term "ACP" and wonder what it means. As a gun enthusiast or collector, it’s essential to understand the significance of this abbreviation. In this article, we’ll delve into the world of ACP and provide a comprehensive answer to the question: What does ACP mean in guns?
What is ACP?
ACP stands for Advanced Combat Pistol. ACP is a widely used cartridge caliber, adopted by the United States Military in the early 21st century. The design of the ACP pistol was intended to replace the M9 Beretta sidearm, which was felt to be outdated and bulky.
History of the ACP
The origins of the ACP dates back to the early 2000s, when the US Military began evaluating new pistol designs. At that time, the Navy SEALs and other elite units were using the Mk 23 Mod 0, a.45 GAP (Glock Pistol Caliber) pistol. Although the Mk 23 showed promise, it was heavier and less reliable than desirable.
In 2000, the US Military selected the Beretta 98D, a 9x19mm Parabellum pistol, for further testing. However, the Beretta was unable to meet the military’s requirements, including reliability issues and limited magazine capacity. This led to the need for a new pistol and cartridge design.
Characteristics of the ACP Pistol
The ACP pistol is designed to be smaller, lighter, and more reliable than its predecessors. Some key features include:
• Compact design: The ACP pistol measures 6.5 inches (16.5 cm) in length and 4.5 inches (11.4 cm) in height, making it an ideal choice for those who prefer a smaller footprint.
• Light weight: The ACP weighs approximately 27 ounces (770 grams), making it easy to carry and handling.
• Reliable operation: The ACP is designed to function without jamming, even under extreme conditions.
• High-capacity magazine: The ACP pistol magazines can hold up to 17 rounds of.40 S&W or 15 rounds of.45 ACP, significantly increasing firepower.
Chamberings and Variations
The ACP can be chambered in a variety of calibers, including:
• .40 S&W (10mm): An intermediate cartridge between the.38 Special and the 9mm Parabellum, offering a moderate increase in velocity and trajectory.
• .45 ACP (11.43mm): Developed from the.45 Service Pistol cartridge, offering larger diameter and more stopping power.
Some notable variations include:
• M19: A compact version with a 3.15-inch (8 cm) barrel and 12-inch (30.5 cm) overall length.
• M17: Full-size version with a 4.25-inch (10.8 cm) barrel and 8-inch (20.3 cm) overall length.
• M18: Recce (Reconnaissance) version with a longer barrel and longer overall length.
Comparison to other Calibers
For comparison, here’s a table highlighting the characteristics of the ACP, the 9mm Parabellum, and.45 ACP:
| ACP.40 S&W | ACP.45 ACP | 9mm Parabellum | |
|---|---|---|---|
| Length (mm) | 17.1 (0.67 in.) | 17.8 (0.702 in.) | 29.5 (1.16 in.) |
| Weight (gr.) | 165 (.40 S&W) – 230 (.45 ACP) | 165 (0.39 oz) – 230 (0.53 oz) | 115 (2.5 gr) |
| Velocity (m/s) | 900 – 1,000 fps (274 – 305 m/s) | 850 – 970 fps (260 – 295 m/s) | 1,040 – 1,400 fps (318 – 427 m/s) |
| Trajectory | Moderate to High | High | Fast to Very High |
Conclusion
In conclusion, the Advanced Combat Pistol (ACP) is a reliable, lightweight, and compact pistol that has become a staple of modern military and law enforcement forces. With its history dating back to the early 2000s, the ACP has demonstrated its effectiveness in various mission scenarios. Whether you’re a seasoned shooter or newcomer to the world of firearms, understanding the significance of ACP can help you make informed decisions when purchasing or handling firearms.
I hope this article has been informative and helpful in explaining what ACP means in guns.
