Modify Bore Up AEG Cylinder Set for M4 Series
[02242 / GU-01-22-01 / MOD BU CYL SET M4]
$70.00 $63.00
Displaying 1 to 2 (of 2 reviews) Result Pages:  1 
by D. SCOTT verified buyer Date Added: Thursday 15 May, 2008
verified buyer
For: Modify Bore Up AEG Cylinder Set for M4 Series
I bought this bore up kit for a Scar V2 unit. First of all the seal was bad on the piston head s I had to replace the o-ring. After that it worked fine for a while, then the piston head shattered, I opened up the gearbox and the black plastic ring around the red face had completely split apart and separated the back from the front. In addition I discovered that the edges around the inside of the cylinder ports (not shown here) were incredibly sharp and still had metal shavings left from when it was cut and machined. Thus it was slowly shaving away my o-rin and I had black everywhere on the outside of the piston. Perhaps I merely got a dud, I'm not sure, but I most will not order this product again, I'd rather be sure of nto making the same mistake twice.
by A. TAIN Date Added: Sunday 03 June, 2007
For: Modify Bore Up AEG Cylinder Set for M4 Series
I bought this recently for my ICS M4A1 upper gearbox because the cylinder, piston, piston head was getting kinda worned out. The Echo 1 Bore Up Cylinder set has some pretty good parts they are tough, sturdy and reliable except the O-RING is TOO SMALL even for the cylinder it comes with! I had to swap out the Echo 1 O-Ring for my stock ICS one which works very well for this set.

Basically everything in this kit works well except for the O-RING which you'll need to replace :(
This kit also includes a PolyCarb Piston stuffed inside the Cylinder which is a plus :)
Displaying 1 to 2 (of 2 reviews) Result Pages:  1 
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