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Matrix CNC Aluminum Airsoft AEG Gearbox Cylinder Head w/ Double O-ring (Type: Version 3 / G36)

13 Customer Reviews

by jason b. on 11/26/2022
"great cylinder head , only issue is my maxx model adjustable m4 nozzle is too tight , the inner o ring did seem a little thicker. shs , lonex, and guarder m4 nozzles have a nice fit not tight or loose, overall great cylinder head just a possible hit or miss on what nozzle you plan to use.
by Lachlan A. on 05/28/2018
"Great seal from the double o-rings, but I had to flare out the nozzle a teeny bit to reduce wobble I was getting to the air nozzle. This isn't a fault of the quality though, just hard to match nozzle IDs to cylinder head nozzle ODs.

Recommend the purchase
by Justin S. on 03/26/2018
"Ordered this for my kwa g36c. It was the only alluminium cylinder head that fit properly. Great design I couldn't be happier.
by paulette v. on 02/23/2013
"This is actually an SHS cylinder head, which is good because SHS makes good stuff. The built quality is good. It fits very tightly in the cylinder and provides an excellent air seal. THe only thing is that I originally bough this for a g&p v2 GB but it wouldn't fit, the diameter of it is a little larger than the g&p's. Still excellent product, could be a little cheaper though.
by George S. on 07/25/2012
"This is a great cylinder head especially if you want great compression. I put this along with a new cylinder and piston head and got near to perfect compression. Not much to say, this is just a great cylinder head if you have a ver.3 gearbox buy it!!

-Doubble O-ring
-CNC accuracy

by dean b. on 11/21/2011
"This is a very high quality cylinder head it is machined very nicely. the double oring makes a nice seal to the cylinder and it has a black rubber mat that sticks off the front of it into the cylinder head to absorb shock and it helps to adjust aoe(angle of engagement)
by Zack D. on 03/10/2021
"Very nice cylinder head for the G36. 4/5 stars for me, reason being I had to dremel out the mounting holes to fit inside an echo 1 G36 gearbox. Echo1 Mtc 3 custom 13:1 build. Other than the above issue, it provides good air seal and the finish on the head is great. It is the longer nozzle, so make sure you get the longer air nozzle to use with this. I personally like the longer cylinder head nozzle as it helps prevent air loss which creates lower fps. Just make sure you are aware this may need modification to fit your gearbox shell. Its not hard to do
by John B. on 05/20/2017
"Everything about these is well made: machining, fit to cylinder, o-ring quality, etc. Be aware that they do not have a flat rubber pad on the back (side piston head strikes) as claimed. They have an embedded o-ring on that surface which is very hard rubber and doesn't lend itself to either cushioning the impact of the piston, nor provide a surface to glue on a sorbo pad.
by Kaden C. on 12/28/2016
"I got this to improve my air seal in my full length g36 to help fill the barrel. I got an amazing airseal in a guarder super lucid full cylinder and a much better airseal with the stock nozzle.

Double o-ring

Rubber buffer pad. Happened to be correct AoE

Longer spout helps direct air.

Tight fit in cylinder

Pretty gold color

Longer spout could interfere with shorter nozzles being pulled back.

I'm giving it a four because of the fact that the long spout slightly interferes with my nozzle being pulled back. This has not led to any feed problems though and can be fixed with some careful grinding on the tappet plate to create a smoother pull.
by Greg S. on 03/23/2016
"This things great. I had some trouble fitting it into my ics par mk3, but with some wd40 and some elbow grease I got it in there. I know, you should only use holy 100% silicon oil blessed by the pope, but I've found wd40 works fine and is cheaper for a big can than a tiny bottle of silicon oil. Any way, it's a great product and will help you air seal. Don't give up if it takes a couple try's to get it in some tighter cylinders.
by paula f. on 02/28/2015
"the item it self didn't fit the brass cylinder but it did fit my aluminum one. you also might have some trouble with compatibility with finding a air nozzle that fits it :) but it works well.
by Sebastian M. on 07/10/2016
"Seems to be a very nice quality cylinder head, but I had to mess with it quite a bit so it would fit in my CYMA AK cylinder. The two o-rings initially prevented this from properly going into the cylinder, so I had to trim them down a lot with some sandpaper so they would fit. Now that this does finally fit, it provides an excellent air seal, is a much tighter fit than the original cylinder head, and looks a lot cooler than it as well lol. Idk why it was at first too big to fit in the cylinder, it's possible that this might be intended for bore up cylinders, idk.. Overall, I don't think this is worth getting as it won't do any crazy upgrade for your gun (I was hoping it'd make my gun a bit quieter but it doesn't really make much of a difference, better shimming=quieter gun) and was for me at least rather hard to install, but if you want that extra bit of air seal and coolness for your Aeg, then go for it. Just keep in mind that it may need some modification to fit.
by Todd R. on 08/20/2014
"Just recieved this item and tried to install it. The nozzle would not even slide all the way down the tube. The base of the tube was wider than the outer end of it. I tried to file down the base of the tube so that the nozzle would slide freely over it but no go. Crap machined product. Threw it right in the trash. Had to use the original CA single o-ring cylinder head. I'm learning that Matrix products are the cheapest price for a reason. Many of the products they put out are crap. This not the first problem I've had with Matrix products.