Upgrade Your Springfield Prodigy Compact (3.5" & 4.25") - Premium ISMI 19lb Mainspring
Unlock superior reliability and a refined trigger feel in your Springfield 1911 DS Prodigy™ Compact AOS 9mm Handgun (compatible with both 3.5″ and 4.25″ barrel lengths featuring the compact grip frame) with this premium 19lb Mainspring from ISMI. ISMI (Islip Spring Manufacturing Inc.) is not just another spring manufacturer; they are a contractor for the U.S. government, producing critical springs used in machine guns with incredibly high cycling rates. This dedication to extreme durability and performance is now available for your Prodigy.
The ISMI Difference: Engineering Excellence
All ISMI springs are crafted from certified silicone chrome alloy, a superior material choice compared to traditional "music wire" used for over 150 years. The founder of ISMI honed his expertise through extensive research in the development of springs for the demanding world of Indy car racing, bringing aerospace-level precision to firearm components.
Every ISMI mainspring, including this 19lb model for your Prodigy, undergoes a rigorous manufacturing process: it is heat treated, shot peened, and stress relieved. These critical steps enhance durability, ensure unwavering consistency, and bolster overall reliability. In independent testing, ISMI springs have endured in excess of 100,000 compression cycles. While ISMI recommends routine maintenance and changing springs annually for peak performance, this demonstrates the incredible lifespan built into every spring.
This 19lb mainspring (hammer spring) is expertly designed for precise compatibility with the Springfield 1911 DS Prodigy™ Compact AOS 9mm Handgun, fitting both the 3.5″ and the 4.25″ barrel versions that utilize the compact grip frame. The 19lb rating is widely recognized as an optimal balance, delivering the authoritative hammer strike needed for consistent ignition of all primer types.
Important Fitment Note: This mainspring is specifically designed for the Springfield Prodigy models with the Compact AOS grip frame. It will NOT fit the Prodigy 4.25" AOS or 5" AOS models that feature the standard full-size grip frame. Please verify your Prodigy model before ordering.
Upgrading to this renowned ISMI 19lb mainspring can contribute to a more refined trigger experience on your Prodigy Compact. It may offer a subtle reduction in perceived trigger pull weight compared to heavier factory springs, without compromising the critical reliability needed for positive primer strikes.
Designed as a direct replacement for the factory mainspring in your Springfield 1911 DS Prodigy™ 3.5″ Compact AOS 9mm Handgun and 1911 DS Prodigy™ 4.25″ Compact AOS 9mm Handgun (models with compact grip frames ONLY), this ISMI spring is a smart investment for enhancing your pistol's performance.
Key Features & Benefits:
- Genuine ISMI Quality: Springs engineered with expertise from Indy car racing and proven in U.S. military machine guns.
- Superior Material: Made from certified silicone chrome alloy, not outdated music wire.
- Advanced Manufacturing: Heat-treated, shot-peened, and stress-relieved for maximum durability, consistency, and reliability.
- Proven Longevity: Tested to withstand over 100,000 compression cycles.
- Fits Prodigy Compact AOS Models: Engineered for perfect fit in Springfield 1911 DS Prodigy™ Compact AOS 9mm Handguns (both 3.5″ and 4.25″ barrel lengths with the compact grip frame).
- Exclusion: Does NOT fit Prodigy 4.25" AOS or 5" AOS models with standard full-size grip frames.
- 19lb Spring Weight: Delivers a strong, reliable hammer strike for consistent primer ignition.
- Potential Trigger Pull Refinement: May contribute to a subtly smoother and lighter-feeling trigger pull.
- Easy Installation: Designed as a drop-in replacement (professional gunsmith installation recommended if unfamiliar with 1911/2011 disassembly).
Elevate your Springfield Prodigy Compact (3.5" or 4.25" with compact grip) with the battlefield-tested, race-proven technology of an ISMI 19lb mainspring. Order yours today!
