My little M4 MK "I don't know"
For your pleasure, nothing special but still my last project
External:
-G&P full metal VLTOR upper and lower receiver with the rail kit
-Madbull stock
-Madbull flip sight
-Madbull pistol grip
-M2 aimpoint replica
-Short front vertical grip with quick mount
-(missing) PEQ box
Internal:
-Modify TORUS 8mm gearbox
-VFC high speed gear
-VFC motor
-IR-hop with M-nub
-363mm 6.03 madbull Black Python barrel
-JG M110 spring
-Low resistance wire and trigger block
-Low resistance selector plate
-MOSFET
-Madbull piston
-Modify aluminium piston head
-A lot of other upgraded part I don't remember
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