The Systema Duracon piston head is a great upgrade that will increase the efficiency of airflow through the cylinder. This piston head has ports on the front to push out the o-ring as it moves forwards, this ensures that all of the air in the cylinder is being pushed out to propel the BB. The ball bearings help reduce tension created by the spring compressing and expanding, this combined with a ball bearing spring guide is the optimal set up to keep your spring in good shape.
lol i dont know what the guy below me did with this piston head but this is a great buy.
made my gun quieter ad increased stock fps from 270 to a 285. (this was before i upgraded with guarder sp 90, systema high speed gears, and systema turbo and this spring was stock marui)
piston head comes with ball baearings which reduce spring binding.
this piston head is awesome
2008-03-28 16:33:53 R. BISSONNETTE
For: Systema Duracon Piston Head With Bearings
ok. i was very happy with this before it blew up on me. it was giving me a great compression. it was durable. and then, it had a massive failure. the head cracked, the bearing failed. the ball bearings flew everywhere around my gearbox. the back of the piston head cracked into 13 different pieces. the screw even bent. i would recommend this piston but i am still weary of the bearings. they don't do very much, and they make the head weaker. i still think thats what caused my piston head to break.
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