Modify AEG Cylinder Set for M4/M4 RIS
[02257 / MOD CYL SET M4 / GB-01-52]
$68.00 $61.20
by A. TAIN verified buyer Date Added: Monday 11 June, 2007
First of all, the product description is wrong when it says this cylinder set comes with an aluminum piston is actually a black pom polycarb piston head with clean vented holes.

The cylinder head is high quality stainless steel with good quality double ring rubber seal that fits very tight with the cylinder which provides awesome air sealing.

the cylinder is virtually spotless and dust free internally you can use it right away without cleaning , very high quality.

the piston head is guarder quality black polycarb with clean vented holes. It is solid, tough, reliable and comes with ball bearings for the spring so make sure u tighten the screws very tight or else the spring will spin your bearings and polycarb screw support loose (the little polycarb hat the holds the bearings together with the help of the screw).

the included piston is purple/grape colored polycarb with last tooth being metal. It is guarder quality and durable.

BUT, this kit has one FLAW...The O-Ring for the piston head is TOO SMALL for the cylinder and provides terrible compression. It seems like both the bore up and non bore up echo 1 cylinder sets have O Rings that are too small for the cylinder.

As a side note I am using this set in a stock spring ICS M4 shooting at around 310 fps and so far everything is still brand new after going through 20000 bbs today. With such low stress settings and an 8.4v battery, I think this gun will will last me a million or so shots with this durable kit installed. However, higher ROF and fps settings will obviously cut down gun life down dramatically.

Rating: 4 of 5 Stars! [4 of 5 Stars!]
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Modify AEG Cylinder Set for M4/M4 RIS
[02257 / MOD CYL SET M4 / GB-01-52]

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