For: (Discontinued) X-Factor TSD M14 DMR Airsoft Gun (Wood)Ok the "Break Down".
GEARBOX: I put a SP120 in it and so far so good at full auto for 2mins.
GEARS: Standard X.Y.T gears, I swapped them with some Systema Super torque-up gears and they work.
SPRING GUIDE: Plastic Ver. 3, thats right, Version 3. I put a System Ver.3 in it.
BUSHING: Plastic, replaced with Guauder Steel bushings
SHIMS: Excellent job on the shimming of this rifle.
MOTOR: No name brand, but can pull the SP120. I replaced it with a Systema Magmum Power.
SPRING: M100 or M110.
TRIGGER: Metal, no need to replace. (No one sells them seperatly anyways.) :P
CYLINDER HEAD, TEMP PLATE, NOZZEL, PISTON HEAD: Plastic. replace, replace, etc.
CYLINDER: Pop metal
PISTON: Ver. 2 Plastic
WIRES: Good enough.
PROS: Easy the upgraded, once you get in the rifle. Affortable, Solid, Awesome!
CONS: Hard to get to the gearbox. No standard mag for it. Modify the Lower reciever to fit a 9.6v battery.