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Matrix Irregular Pitch Airsoft AEG Upgrade Spring (Model: M170 550~700 FPS)

ID: 54053 (SPR-MTX-M170)
SHS / PPS54053
4.8 stars, based on 42 reviews
Matrix Irregular Pitch Airsoft AEG Upgrade Spring (Model: M170 550~700 FPS)
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These Matrix springs are build after careful study of major Japanese spring sets providing all the features you'll look for in an AEG spring for maximum performance. It is made out of high quality anodized piano wire, with tension carefully measured. Systema's irregular pitch, Prometheus's Stainless steel material and PDI's durability are all features duplicated and found in a Matrix spring. Test shown that this spring will last you longer, is more durable and will out perform!
For experienced players only. Using high powered springs will result higher wear and tear than normal.


  • Irregular pitch spring coils: Variable tension. Reduces stress, wear and tear for your gearbox
  • Strength: Made out of stainless steel. Increased tension and durability. Tension lasts 50% longer than other leading brands
  • Compatibility: Designed for all versions of Airsoft AEG gearboxes

Matrix Spring Power Chart. (% / FPS)

FPS estimate based on average power output. Exact FPS result may vary based on alignment, installation, inner barrel, cylinder and other factors.
  • 120% (M90) ~280~340 F.P.S.
  • 130% (M95) ~290~350 F.P.S.
  • 140% (M100) ~320~380 F.P.S.
  • 150% (M110) ~330~390 F.P.S.
  • 160% (M113) ~340~400F.P.S.
  • 170% (M115) ~350~420 F.P.S.
  • 190% (M120) ~360~450 F.P.S.
  • 210% (M125) ~400~470 F.P.S.
  • 235% (M130) ~420~500 F.P.S.
  • 260% (M140) ~450~550 F.P.S.
  • 300% (M150) ~480~600 F.P.S.
  • M160 : ~530+ 20 F.P.S.
  • M170 : ~560+ 20 F.P.S.
  • M180 : ~595+ 20 F.P.S.
  • M190 : ~625 + 20 F.P.S. Airsoft AEG Tip:

Always reset your spring by firing one shot in semi-automatic before putting it away.
M120 / 190% or stronger spring upgrade may require reinforcement of other gear box internal parts.
9.6V or Stronger battery may be required to power higher than stock springs.

For more info on your Airsoft AEG gearbox please refer to our video guides. AEG Gearbox Guides

Review of Matrix Irregular 210% Airsoft AEG Springs.

42 Customer Reviews

(Write a review)

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 Daniel I. on 02/23/2016
"I bought this spring about 8 months ago to go into my JG SIG 550. The FPS on the first chrono I used was 395 FPS with .25g BBking bbs. Went to my first Milsim this year and I chronographed it there and it was shooting around 429 FPS with .25g Elite Force bio bbs which I don't like. So needless to say I had to take my gun apart and cut 4 coils off to get it down to 390 FPS with .25g bbs. I don't think this has anything to do with the spring I think it was the chronographs I used and bbs, BB King bbs are better quality bbs than Elite Force bbs.

Note: I have a bearing on the piston head and the spring guide which compresses the spring more which in turn can increase the FPS. Plus I have 100% air seal and a type 0 cylinder.

Overall I think this is a great spring! I think next time i am getting a Matrix M113 irregular pitch spring.
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

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