Premium quality springs made from aerospace-grade chrome silicon steel for consistent performance and durability.
Designed to maintain a constant compression rate, reducing stacking and improving trigger pull.
Includes a 10% reduced-power trigger rebound spring and a factory-weight hammer spring for reliable ignition and consistent let-off.
Built to Aerospace specifications from materials like chrome silicon and stainless steel for durability and performance.
Heat treated, shot peened, and stress relieved to minimize spring set and ensure consistent operation.
Designed for a variety of Glock models, with the 17 lb spring suitable for the Glock 17 among others.
The ISMI 1911 Mainspring is crafted from corrosion-resistant materials such as chrome silicon and stainless steel, adhering to Aerospace specifications for durability and performance.
Designed for the 1911 AUTO with specific models including Government and Commander, the mainspring is available in popular 19 lb. and 17 lb. rates for a lighter and consistent trigger pull.
Each spring is heat treated, shot peened, and stress relieved to reduce spring set and ensure maximum reliability.
ISMI magazine springs are made from high tensile, chrome silicon wire, ensuring durability and a long service life without failure.
The SSCS model fits single-stack, 8 round .45 ACP and 10 round .38 Super magazines, while the SSCS2 is suitable for magazines with narrow followers, and the SS10 fits 10 round .45 ACP magazines.
These springs are not compatible with Wilson Combat plastic followers and are designed for 1911 Government and Commander models.
The spring is designed to aerospace specifications for maximum durability and performance.
It is made from chrome silicon, heat treated, shot peened, and stress relieved to reduce spring set.
This ISMI spring is a reduced power 13 lb. version compared to the factory 16 lb. weight, suitable for the Smith & Wesson M&P model.
The spring is made of high tensile, chrome silicon wire for durability and longevity.
Designed to fit Beretta 92 and 96 high capacity magazines, accommodating 15 rounds of 9mm or 13 rounds of .40 S&W.
Undergoes a rigorous process including shot peening, heat treating, and stress-relieving to prevent cracking or failure.
Constructed from high tensile, chrome silicon wire for durability and longevity.
Compatible with STI/Infinity standard magazines for all calibers up to 140mm, including +1 and +2 round base pads.
Designed to perform reliably with heavy bullets, including those weighing 200 gr. or more.
The RECOIL SPRING FOR GLOCK® ISMI GUIDE ROD is made from cryogenically processed, stress relieved and hardened 4140 steel for no-flex cycling.
It is compatible with Glock 17 Gen 1-3 models and can be adapted for Gen 4 with an additional item.
The guide rod fits small I.D., flat wire, factory and aftermarket springs without the need for modifications or alterations.
Constructed from high tensile, chrome silicon wire for durability and longevity.
Designed to fit Glock models 19, 21, 23, and 32, suitable for Law Enforcement and high capacity magazines.
Features a 10% extra power spring for improved performance.
Constructed from high tensile, chrome silicon wire for durability and longevity.
Designed for various capacities of Para-Ordnance high capacity magazines, requiring trimming for shorter sizes.
Undergoes shot peening, heat treatment, and stress-relief processes to prevent cracking or failure.