The gbb version is really good out of the box but I did some upgrades.
 
	PDI 6.00 inner barrel
 
	WII TECH aluminium nozzle 
	WII TECH Rubber Pad 
	Maple Leaf Hop Up 60°
 
	 
 
	Running the TM on Black/14KG gas at 1.4J with 0.32gr bbs.
 
	 
	I would highly recommend to upgrade the nozzle because the stock one breaks very easy.