Contact Us Tel:(626) 286-0360 Store Locations
Phone Support M-F 7am-5pm PST
Browse by Type or Category
Free Shipping for Orders over $149. EPIC DEALS released daily!

Lonex Compression Upgrade Set w/ Mushroom Type Piston Head for Airsoft AEG Rifles (Model: SG-552)

19 Customer Reviews

by Carlos Eduardo TreviƱo G. on 01/22/2020
"Pros
Goood for Cyma Ak 47 Nuzzel NICE,
Piston omg Really well
Cilinder goood

Cons
Cilinder Piston Dont Good for Cyma Aks only
by Mark B. on 01/09/2020
"Would this work with the TM Highcycle AUG (v3 gearbox)?
I'd like to get the Lonex Ultimate Polycarbonate Piston to go with it.
by Mandy W. on 01/04/2020
"Would this install on a krytac alpha crb?
by Sebastian J. on 12/26/2019
"Put it all together and it makes for a near perfect compression! It does alter the sound and makes it sound less "slappy" or cheap sounding when shooting.
by Ilan M. on 11/07/2019
"I just installed this kit in my Lancer Tactical LT-15, and BOY the air seal in this is amazing to say the least.

Is not only a little bit quiet, but the air seal between the air nozzle, piston and piston head is incredible, not a single air leak to complain about. 5/5 does what it says.

FYI tho, the piston head that comes stock with my replica has a different way to install that the one that comes with this kit, however, it can be installed the same way that the one that comes with the replica and no problem at all.
by Matt B. on 10/25/2019
"This cylinder set is well built, and great for a DMR build. I am running this with the Lonex Red piston, and am having zero problems. After lubrication, and a washer mod (washer between the piston and piston head), I am achieving perfect air seal, and perfect AOE.

Honestly the Mushroom head isn't making my gun much quieter, but that could be due to the ASG M135 that I am running with this cylinder set. I am using this in the Krytac MK2 SPR, and it is a drop in fit.
by Panchanon C. on 07/07/2019
"Just installed and it is so quiet
by JAMES L. on 08/09/2018
"Installed on an ASG AUG A2. for 6 months, it has given very consistent fps readings within 5fps.

The sound it makes is very cool; sounds like a Hollywood suppressor the way the rubber quickly mutes the sound.

Highly recommended for an easy upgrade from stock plastic.
by Josee C. on 05/23/2018
"very good quality,i was very impres. the airseal is fantastic. I got this kit for my m27 because it had the full cylinder, sorry for the bad english i spreak french
by David P. on 01/27/2018
"Wow! I put this in my krytac and it gave me 15 more fps. It's very quiet. I'm getting another one for my other krytac.
by Mattheau J. on 08/17/2017
"This is an amazing upgrade.I got an extra 40fps from just installing it(I had the stock APS boar tactical so that probably why because they kinda suck at internals) that and its actually linda quiet for some reason. Alot easier for me to sneak and shoot
by Mark M. on 12/24/2016
"Great kit and seals great. I put this in my King Arms Galil Mar. I did change out the air nozzle for the matrix aluminum one. Even with my hop-up turned all the way down and a stock spring it shoots straight at 75 feet, I'm sure with it adjusted it will be stellar!!! NO cons.
by Kristin R. on 03/23/2009
"Amazing little kit. I was planning to upgrade my MP5K PDW with several different parts before I saw this. I did some math and figured I would save a nice sum of money seeing as how buying the kit instead of separate parts was MUCH cheaper. I decided it was a must for my gun. If you're new to upgrading and feel you're in over your head than this thread will definitely help.

All the parts in this kit are TOP quality you can expect from Lonex.
by jesse h. on 07/17/2023
"The package arrived busted open, but the stuff inside doesn't appear to be damaged. Took a lot of effort to fit the head into the cylinder just right, I only think I was able to get it in because I have a big clamp and was able to apply small amounts of movement with high force. Good luck if you don't have the tools.
by Cameron S. on 07/19/2021
"I have the Echo 1 MK36c Ver. X with 8mm bearings, which my understanding is identical to the JG G36c. I had to enlarge the holes on the cylinder head to get it to fit, the pins on the gearbox were too big. The cylinder was also really tight and I wasn't able to get the cylinder head in without damaging the o-rings. I ended up just using the stock cylinder which sealed fine. The nozzle was the correct length.