Eemann Tech Recoil Springs Calibration Pack OPEN MAJOR for 1911/2011

Eemann Tech Recoil Springs Calibration Pack "OPEN MAJOR" is designed for 1911/2011 pistols and their clones with a 5" barrel length.

The Calibration Pack "OPEN MAJOR" includes Progressive Recoil Springs ranging from 6 lbs. to 9 lbs., primarily used in "OPEN (MAJOR)" 1911/2011 pistols as classified by IPSC rules.

• “OPEN MAJOR” pack contains:
• ET-111326 / 6 lbs - 1 pc.
• ET-111327 / 7 lbs - 1 pc.
• ET-111328 / 8 lbs - 1 pc.
• ET-111329 / 9 lbs - 1 pc.

Progressive Recoil Springs differ from common springs by having a decreasing distance between coils from the middle to the last coil. When pressure is applied, the spring functions in two phases:

• 1st: The first half of the spring, with identical coil distances, begins compressing.
• 2nd: Once the first half is fully compressed, the second half with reduced coil distance starts compressing.

Each coil increases spring compression, providing maximum resistance and reducing recoil impulse. Every Eemann Tech Recoil spring has a unique color for easy identification of its power value throughout its service life. All springs are painted with polymer heat-treated paint, which remains flexible and does not damage or dye the handgun interior.

Note:

• Installation of the progressive recoil spring for 1911/2011 by a certified gunsmith is recommended.

No fitting is required for most cases, allowing for instant installation. However, some pistols may differ in production or be pre-modified, requiring the assistance of a certified gunsmith for installation.