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 $129! New deals released hourly and daily. See Deals Here!

Matrix Irregular Pitch Airsoft AEG Upgrade Spring (Power: M115 350~420 FPS)

59 Customer Reviews

by Wayne B. on 11/24/2021
"I put an M125 into my LCT RPK NV. It increased the FPS from ~410 stock (on an M120) to ~435 with 0.20g BBs. It's right below my field limit for 450fps, so perfect for my application.
by christian z. on 09/18/2020
"cheap spring with a wide rang of spring gets the job done , what more can i say its a spring
by Stephen H. on 03/17/2020
"My go-to spring for upgrades and downgrades. Keeps me field legal in CQB and gives me the range I need out in the field. Just make sure your gearbox can handle the strong spring or it'll lock up. If it half-pulls or constantly requires several trigger pulls for a single shot, let the piston release and then get that spring out of there.
by Bill S. on 01/30/2020
"Buffed my FPS by 30+!!! Best upgrade spring
by Sebastian J. on 12/26/2019
"Used for a couple of builds, this is my go to CQB spring brand and tension, I used the M110 and got about 340 FPS.
by Sebastian J. on 12/26/2019
"Good little spring at a good price, use it for a low FPS build and I get exactly 340FPS, I used the m110.
by Joanne S. on 11/25/2019
"Bought the M130 for my Amoeba striker. Very good quality and my gun chrono’d 495-500 FPS.
by Brice S. on 10/06/2019
"Works as intended. A reasonably priced spring that works perfectly in my DMR build.
by Dmitri A. on 05/22/2018
"Matrix Irregular Pitched Springs

-wide selection in strengths
-irregular pitch is great performance upgrade

-Black coding chips off and gets in the gearbox
*not a serious issue, just annoying
by Jeffrey C. on 04/25/2017
"Good spring, works great and if you have a quick-spring-change gearbox, it becomes no problem to install because you dont need to open the gearbox. But if you have a standard gearbox without a quick-spring-change then look up some videos to show you the right technique to install it without too much trouble. Hint for those with normal gearboxes, use a screwdriver it guide/push the spring and spring guide back into place.
by Andrew G. on 11/10/2016
"I just used this spring a few days ago as I just had it installed in my SR25, it shot on average, 350fps. All day as I was playing there were no problems with it. A very good spring by Matrix.
by Chace D. on 03/29/2015
"this is a great spring got it in my kwa m16 no other internal upgrades besides this spring
m16 before matrix 140 spring 310-340fps .30g bbs
m16 after matrix 140 spring 409-420fps .30g bbs
i was able to get 515ps on .25g
by Russell G. on 03/23/2015
"Great spring,buy it if you are looking for a new upgrade spring.
by Thomas A. on 03/08/2015
"I have bought 2 of these and love them. I have one in my Elite Force CQB and one in my G&G Combat Machine. They both work very well. my E.F. gets about 445FPS and my G&G gets about 440FPS with 0.20g BB's. with 0.25g BB's I am just under 400FPS with both of them. Legal with the fields that I play at. I shot 0.28g BB's out of them which puts me at 375-380FPS with them.
Now I just have to but me a motor that what get hot and stop working during a game. Mine works ok as long as I just use single shot but, when you use full auto and it stops with the piston on the last tooth, it mine does not have enough torque to start back up from there. Have to take the gun apart and reset it every time.
by Suzette S. on 02/12/2015
"This spring is very nice. I bought one for my elite force m4 cqc and it bumped up my rate of fire a couple rps but it did reduce my fps a little which I was fine with. Overall a good product!