Uploaded January 2023 | Updated September 2026, 3 weeks ago

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This tutorial video show how to swap the hopup rubber and/or the inner barrel of the MDR-X. Changing these parts will affect the muzzle energy of your airsoft gun, users should obey to laws regarding ownership of airsoft guns in their country.

Please refer this video for the barrel removal procedure: youtu.be/3DTCyqf1Z1o

AEG type Flat Hopup rubber - 50°/60°/70°/80°: silverback-airsoft.com/hop-56

AEG type Flat Hopup rubber - 50°: silverback-airsoft.com/hop-52
AEG type Flat Hopup rubber - 60°: silverback-airsoft.com/hop-53
AEG type Flat Hopup rubber - 70°: silverback-airsoft.com/hop-54
AEG type Flat Hopup rubber - 80°: silverback-airsoft.com/hop-55

AEG type Flat Hopup rubber - 50° (4 pack): silverback-airsoft.com/hop-57
AEG type Flat Hopup rubber - 60° (4 pack): silverback-airsoft.com/hop-58
AEG type Flat Hopup rubber - 70° (4 pack): silverback-airsoft.com/hop-59
AEG type Flat Hopup rubber - 80° (4 pack): silverback-airsoft.com/hop-60

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

Music: Apotheosis - Eagle Eyed Tiger: soundcloud.com/eagle-eyed-tiger/apotheosis