Mouse fart SRS & Tac41 AIRBRAKE PISTON HEAD Ver1.4 + spacer

(2 customer reviews)


-Fits SRS and Tac41 only

-Comes with upgraded high quality O-ring

-Flexible rubber airbrake, prevents any and damage of the brake regardles of nozzle tightness or excentricity

-Use proper lubricant before every assembly on O rings for silence and stabil sealing (WD40 DRY PTFE)

-For testing efficiency shoot it with heavy bb, set hopup, quality supressor & outside

-Reduces impact of the piston, noise signature, vibration of the rifle and wear of parts.

-Improved sealing section ensure optimal function with less frequent cleaning and lubrication & cold weather

-CNC 6063 aluminium made head

-CNC POM made spacer for SRS pull pistons heads (rear spacer available separately)

-Centering front end of piston without increased friction

-Includes ONLY front spacer

-Compatible with all Silverback PULL bolt pistons, include early 2016 light & standard pistons, 2018 stock & VMP pistons, Faceless Creepy pistons.

11 in stock


The latest and last version of mousefart piston heads.

The flexible airbrake seals any nozzle regardless tolerances or excentricity.

The airbrake is virtually indestructible by impacts with normal use.

Additional information

Weight 25 g

2 reviews for Mouse fart SRS & Tac41 AIRBRAKE PISTON HEAD Ver1.4 + spacer

  1. Syed (verified owner)

    Execellent product. Ordered for my SRS A2 22″inch. Completly silent with Stock spring 75N and virtually no FPS drop, I am getting 380fps Average on .20g no noise or what so ever. Whereas with silverback 150N it does silence it to a great extent but FPS drop is tremendous. May be I need to test with m170 spring.

  2. Jaron Rattke (verified owner)

    this Product is worth every cent. It does what it has to do and it makes my SRS damn quit. I work with a M140 Modify Spring in a 16″ A1 and achieve 2,3j with 0,45gr with pretty no noise above 2m distance from the weapon. Thank you for that nice product.

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