Element Polycarbonate Air Seal Hopup Chamber Set for M16 / M4 Series Airsoft A.E.G.

"This hopup unit is amazing, soo much better then the stock hopup. The top of the it was really tight which made putting in the hoparm and nub annoying. But all in all was and great buy you cant go wrong with $20. also this element hopup is almost identical to shs polycarbonate hopup, which shows the quality.

"I'm VERY VERY VERY VERY VERY glad that I bought this. I have a G&P MOE M4 and have had problems ever since I got it. I spent money replacing just about every internal (gearbox, everything in the gearbox, bucking, spacer, and inner barrel), but the problem still didn't resolve. The last thing to get was a hop up, so I got this one, and now I have a lean, mean, foliage green killing machine!

Pros
FIXED MY M4's PROBLEM!!! THANK GLOB!!!
Really easy to build. I've never built an M4 hop up before, and I didn't even have to look up how to do it.
Only $20
O-rings make for a good air seal
Comes with everything you need to assemble the chamber (doesn't include bucking or spacer/nub)
The gears don't move very easily, so once it's set, it's set for EVER (probably not).

Cons
It would look cooler if it wasn't so red, but I don't care that much
Never wants to play Xbox with me. It's always, "I'm too busy reading, why don't you go do your AP homework?"
Sometimes doesn't pay its half of the rent.

"I have purchased 3 of these

The work great!! this is the best M4 hop up I have found. I like this better htan the Madbull Ultimate Hop up.

PROS:

- Fits nicely in metal body M4s
- Gears fit nicely together
- O-Rings help with air seal

CONS:

NONE

If your looking to replace your5 M4 hop up, look no further. try this one. !!

10/10