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

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

The Calibration Pack "STANDARD MAJOR" includes Progressive Recoil Springs ranging from 12 lbs. to 15 lbs., commonly used in "STANDARD (MAJOR)" 1911/2011 pistols as classified by IPSC rules.

“STANDARD MAJOR” pack contains:

• ET-111332 / 12 lbs - 1 pc.
• ET-111333 / 13 lbs - 1 pc.
• ET-111334 / 14 lbs - 1 pc.
• ET-111335 / 15 lbs - 1 pc.

Progressive Recoil Springs differ from common springs by having a decreasing distance between coils starting from the middle of the spring 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 from the start.
• 2nd: Once the first half is fully compressed, the second half with reduced coil distance begins compressing.

Each coil increases spring compression. Full compression provides maximum resistance and reduces recoil impulse.

Every Eemann Tech Recoil spring has a unique color for easy visual identification of its power value throughout its service life.

All springs are painted with polymer heat-treated paint, which remains flexible throughout the service period. The paint does not damage or dye the handgun internally.

Note:

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

No fitting required and instant installation in most cases. In some cases, pistols may differ in production or be pre-modified and may require the assistance of a certified gunsmith for installation.