Iver Johnson Arms 1911A1 1911 A1 Rattlesnake Government Size 45 ACP 8+1 5"

The Iver Johnson Arms 1911A1 Rattlesnake Government Size in 45 ACP is a full-size, traditional single-action pistol built around the proven 1911 platform. This 8+1 capacity firearm features a 5-inch barrel and 4.1 lb weight, delivering the ergonomic handling and controllable recoil impulse that make the 45 ACP round effective for defensive and training applications. The Rattlesnake model carries forward the lineage of a manufacturer with over 130 years of handgun production experience.

The 5-inch government-length barrel is the standard for 1911A1 pistols and optimizes velocity from the 45 ACP cartridge while maintaining a frame length suitable for duty and sport shooting. At 8+1 rounds, the single-stack magazine capacity reflects the design ethos of the platform—manageable recoil and trigger reset for rapid, accurate follow-up shots. The pistol ships with one magazine and is expressly not rated for +P pressure ammunition or reloaded cartridges, meaning operators must use standard-pressure commercial or military-spec 45 ACP loads to maintain reliability and safety margins.

This configuration appeals to shooters who prefer the manual-of-arms and ergonomic profile of the 1911 platform for range training, sport competition, or defensive carry. The 45 ACP cartridge remains relevant across law enforcement and civilian markets for its stopping power and barrier penetration characteristics. The government-size profile—approximately 8 inches in length—sits at the practical limit for appendix and waistband carry, making it viable for concealment while providing a full sight radius and grip for accuracy. Shooters migrating from double-action platforms or modernized striker-fired designs often choose full-size 1911 variants as a dedicated training tool or collection piece.

The 1911 platform remains deeply embedded in pistol culture, supported by extensive aftermarket accessory availability—from holsters and magazines to sights and grips. The Iver Johnson Rattlesnake Government Size fits within that ecosystem and addresses buyers seeking a full-size, single-action 45 ACP at an accessible price point without compromising on historical brand credibility or mechanical soundness.