Uploaded January 2023 | Updated September 2026, 3 weeks ago

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This tutorial video show how to swap the spring of the MDR-X. Changing the spring will affect the muzzle energy of your airsoft gun, users should obey to laws regarding ownership of airsoft guns in their country.

40N spring: silverback-airsoft.com/spr-1040
60N spring: silverback-airsoft.com/spr-1060
80N spring: silverback-airsoft.com/spr-1080
100N spring: silverback-airsoft.com/spr-1100
120N spring: silverback-airsoft.com/spr-1120
180N spring: silverback-airsoft.com/spr-1180

FPS, m/s & Joule measurments are specified on the product pages.

Warnings:

- The stiffer your spring, the faster the battery will drain.
- The stiffer your spring, the faster the mechanics wear out.
- Strong springs may require to disable the battery protection :

MDR-X exploded views: silverback-airsoft.com/pdf/MDR-0000_explode_views.pdf

Music: Chamomile Tea - ADMO : soundcloud.com/admoyo/chamomile-tea