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Rydock · December 4th, 2016, 09:57

My KWA rm4 erg has a flat face, unported, aluminum piston head in it from the factory. Would it be advantageous to throw in a nice ported one while I have my gearbox open for maintenance?

December 4th, 2016, 09:57	#16
Rydock Trader rating Join Date: Apr 2016 Location: Toronto, Ontario	My KWA rm4 erg has a flat face, unported, aluminum piston head in it from the factory. Would it be advantageous to throw in a nice ported one while I have my gearbox open for maintenance?