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AIM Top Hell-Fire High Speed Piston w/ Metal Teeth Strip for Airsoft AEG Gearbox

33 Customer Reviews

by Steven N. on 10/05/2009
"My Spur gear's inner teeth are completely stripped, my Sector gear is missing a tooth, and when this all happened the piston head came loose and it's o-ring went to the land of missing socks

BUT MAN THERE WASN'T A DENT OR ANY DAMAGE ON THE PISTON OR THE TEETH.

The fact that the teeth are replaceable only makes it so much sweeter
by Kalen D. on 10/01/2009
"This piston is great. I installed it in my G36C, along with a PDI 190%(M120) spring, and a High torque motor. It has the strength of an aluminum piston(b/c of metal teeth), but the lightness of a polycarb. Also, it is not shown in the picture above, but the sides of the piston that guide it through the gearbox are slotted, just like the Matrix aluminum ones. Highly recommended for any piston upgrade.
by Ryan A. on 09/18/2009
"I just bought it for a piston replacement for my g36 and so far it works pretty well.
by cody s. on 04/12/2009
"this is one of the best pistons i have used to date i had it in a ca g3 with an m130 and it held up to more shots than any other piston i have ever used recently the metal tooth strip got yanked out the back of the polycarbonate body but it made it through about 50000shots and never stripped i couldnt ask for better for only 20 bucks ill never buy another type of piston again
by Richard J. on 04/10/2009
"I was having probs of my gun eating pistons.She even ate a ICS aluminum piston in the 1st5k rounds.This piston has held up like no other.The teeth seem to be deeper then most i have tried giving your gears a better bite to the piston.A very impressive product.
by christian s. on 03/27/2009
"this piston is awesome. it is extremely durable and is comparable to my friend's 50 dollar piston. great buy and i highly reccomend it. i use it in an m120 gearbox.
by richard w. on 03/03/2009
"all i can say is one word WICKED....my god. great piston light and strong steal teeth awsome!
by Ryan Y. on 10/14/2008
"One of the best piston I have used. Great for both high speed and "durability" because it is super light with the metal teeth strip as the same time. Great price! The deep fire one is too heavy and way over-priced.
by Chris S. on 10/10/2008
"Great piston i compare it to almost as good as deepfire full metal tooth and this is lighter and better for highspeed, using with ms120 spring and short toothed sector gear at around 30 rps and works GREAT.
by Ethan F. on 07/29/2015
"I had this piston in a gun running on a 14:1 gear set and a Matrix 5000 series high speed motor. The piston I got was not perfectly symmetrical, and the grooves on the sides got misaligned and jammed up against the piston guide grooves in the gearbox shell. Subsequently, the teeth strip got ripped out the back of the piston and broken in half by the sector gear. I got a second one and have had no issues with it at all in a DSG build. The piston itself is great, but the quality control is a bit lacking.
by frank t. on 06/21/2012
"Im a big fan of this piston, I've bought 2 of em I'm currently running one in my M16 its only running about 26+ RPS at about 384.4 +/- 2.1 FPS.

My P90 different story however:

SHS 13:1 super high speed
Matrix high speed motor
11.1V Dean plug Lipo
and since Its my indoor gun sadly I'm using an M100

It rocked for awhile except at the back of the piston when the gear first makes contact the plastic cracked and the teeth would be push up and only cycle every so often, I believe I really should have decompressed my spring better to relieve pressure. By not just a single cycle but popping the gearbox out and checking I blame my laziness after a hot day.
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