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AIM Top Hellfire High Speed Piston GEN2 w/ Metal Teeth Strip for Airsoft AEG Gearboxes

36 Customer Reviews

by Charlie K. on 04/23/2012
"So not too long ago i was building an insane support weapon (m249) and i needed a really high speed piston (stock ones kept stripping)

Here was my setup for my M249:
SHS 13:1
SHS High Speed Motor
Matrix 8mm Bearing Bushings
Matrix shims.
Matrix Cylinder

So i was getting around 35bb/s with the set up and the stock pistons just werent working for me.

So I got this piston and now its shooting 40-45 bb/s on a 11.1v lipo

PROS
Light! Fast! 5-10 more bb/s
Full metal teeth

Cons:
DOES NOT COME WITH A PISTON HEAD.
Since teeth are full metal, it will strip your gears in the case of a gearbox lockup
by Ryan L. on 02/01/2012
"I had this piston in my stock matrix tactical system (m120) m4 and it was ok. it lasted about 15~25k rounds. the only thing that i saw wrong with it was the contact tooth. it totally broke off. but that was after 20k rounds. it is very light and ok in strength. i wouldn't go over an m130 with this.
by Yoshiaki H. on 03/22/2009
"Great piston, but not for heavy spring rates like the Guarder 150. Encountered 2 piston failures using Guarder 150 springs chrono over 500fps. The first tooth cracked off on both pistons. This was on 2 separate guns. Heavier spring rates the Deepfire is still what I would recommend.....over 15,000 rounds and counting on 500fps aeg.

Best piston for lower fps say around 400fps and provide better ROF due to its lightweight design. Currently on AEG with Guarder 130 spring shooting 450fps on lipo battery. About 5,000 rounds and counting.

Testing the threshold of the piston. Currently put in Guarder 140 Spring aeg. We will see if it can hold the 140 spring rate.

The above are all done on the skirmish field during games with use of full auto and semi firing.
by John S. on 02/19/2009
"Great for high power setups but not for high speed it wont wear but it will hurt your gears
by Russell G. on 02/01/2020
"Unfortunately after I installed this piston and performed a single test fire, the first tooth or notch snapped off and I was unable to fire. However, my gears are full metal which could explain why the tooth broke off. I could have gotten a defect (due to having decent reviews), or the metal construction was poor.

In my opinion, the piston body seems fairly good, but I can't recommend this product if you have a metal gearbox with a high torque motor.
by Miles T. on 01/21/2014
"I just got this piston and stuck it in my Matrix PDW and fired maybe less than 100 rounds before the first tooth on the strip broke. Granted I do have a high speed motor, LiPo battery and an m120 spring so it is putting a lot of stress on the teeth. I may have just received a lemon or maybe this piston should only be used for lower powered guns. Either way I am going to try to find a much more durable piston this time around.