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G&G Polycarbonate Piston Head w/ Bearings
[04274 / G-10-045]
Displaying 1 to 4 (of 4 reviews) Result Pages:  1 
by E. ROBERTS verified buyer Date Added: Friday 20 July, 2012
verified buyer
For: G&G Polycarbonate Piston Head w/ Bearings
Product Information:
Purchased this piston head to replace the stock plastic piston head in my AGM Scar. Great build quality and will definitely extend the life of the gearbox being made from a stronger polycarbonate material, not to mention, the included bearings will help to relieve any binding or stress from the spring. The o-ring that came with the piston head is to small and does not provide adequate compression. Went to my local hardware store and bought a slightly larger o-ring, which fixed the problem.

- Great build quality/construction
- Increased compression over stock after replacing the o-ring with one that is slightly larger

- Needed to replace the factory provided o-ring compromise I had to purchase myself from a local hardware store in order to ensure I wasn't loosing any compression.
by J. ARVAY Date Added: Sunday 13 December, 2009
For: G&G Polycarbonate Piston Head w/ Bearings
Product Information:
I've been running this piston head, with a new and larger o-ring, in a set-up putting out 446 FPS, and there is no damage after roughly 4,000 rounds. This is the original piston head that came in my G&G FS-51, and I thought that I would use it until it broke under the stress of an m140, but it's definately held up well.

-Fairly cheap.
-Holds up well under a lot of stress, but I wouldn't go over an M140 with this installed. I'm not sure how much life mine has left in it, and I'd just stick with _M130's.
-Ball bearings.

-O-ring is undersized. That's my only complaint, and it's easily changed out.
by J. HERPICH Date Added: Thursday 12 March, 2009
For: G&G Polycarbonate Piston Head w/ Bearings
Product Information:
G&G Polycarb Piston Head w/Bearings

good piston head works much better then my stock one that came with my jg sr16
has good porting

it also like any other piston head u buy needs a bigger Oring or just use the one off ur stock piston head like i did
by S. T. verified buyer Date Added: Tuesday 17 March, 2009
verified buyer
For: G&G Polycarbonate Piston Head w/ Bearings
Product Information:
Bought and put this piston in my Echo 1 G36C. I don't regret it.

Been installed for two months now, still without wear after around 5K rounds and an M110. Stock O-Ring was too small to provide decent compression, and I replaced it with the stock JG O-Ring (for some reason the JG o-ring provided better compression than a #14 size). Compression is now very good, but not perfect.
Bearings do their job and also add 10 or so FPS because they are like a spacer, and add a little extra tension to the spring. Porting is pretty good, and their are several around the head, in a weird teardrop-like shape. They serve their purpose well though.
Also, this is the stock piston head for the G&G Soc 16, which I have heard great things about.

Price vs. Quality ratio (low price:high quality)
Bearings relieve spring tension
Bearings act as a spacer and provide ~10 FPS boost

O-Ring too small (almost all piston heads have this problem, both pre-installed and after market ones)

Great piston, definitely recommended.
Displaying 1 to 4 (of 4 reviews) Result Pages:  1 
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