Uploaded January 2023 | Updated September 2026, 3 weeks ago
If you are willing to use heavy bbs (heavier than 0.32 g) in your MDRX replica, you can instal the "high nub" (provided) instead of the "low nub" (installed). This high nub will add 500 µm of preload.
This tutorial video show how to swap the hopup nub of the MDR-X. Changing this part 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
WARNING: you cannot lift heavy bbs with low muzzle energy. Please refer this video for spring change: youtu.be/IQ9qDAAx6P0
Music: Stargaze - Pongman: soundcloud.com/pong-man/emastered-02012020b-stargazemix2-1
If you are willing to use heavy bbs (heavier than 0.32 g) in your MDRX replica, you can instal the "high nub" (provided) instead of the "low nub" (installed). This high nub will add 500 µm of preload.
This tutorial video show how to swap the hopup nub of the MDR-X. Changing this part 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
WARNING: you cannot lift heavy bbs with low muzzle energy. Please refer this video for spring change: youtu.be/IQ9qDAAx6P0
Music: Stargaze - Pongman: soundcloud.com/pong-man/emastered-02012020b-stargazemix2-1










