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zReaperAssassin · August 23rd, 2018, 12:43

So, I’m having a slight problem with my new M4. All the upgraded internals were originally in a G&P M4. It was shooting ~1.3J or ~380FPS with a 0.2g bb. I since bought a VFC VR16 to transfer the parts to the VFC. However, after switching all parts and shimming to new gearbox, the internals have since dropped to about ~0.95J or ~320FPS with a 0.2g bb. No internals were changed, no compression issues. When nozzle is fully forward, there is no light down Barrel when a flashlight is used in feeding tube. Like I said, absolutely everything is the same. What could this be?

August 23rd, 2018, 12:43	#1
zReaperAssassin Trader rating Join Date: Feb 2017 Location: Glace Bay, NS	Internal Transfer, FPS Loss So, I’m having a slight problem with my new M4. All the upgraded internals were originally in a G&P M4. It was shooting ~1.3J or ~380FPS with a 0.2g bb. I since bought a VFC VR16 to transfer the parts to the VFC. However, after switching all parts and shimming to new gearbox, the internals have since dropped to about ~0.95J or ~320FPS with a 0.2g bb. No internals were changed, no compression issues. When nozzle is fully forward, there is no light down Barrel when a flashlight is used in feeding tube. Like I said, absolutely everything is the same. What could this be? __________________ WREAK HAVOC Last edited by zReaperAssassin; August 23rd, 2018 at 18:13..