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SBA Safety Advice To SRS Pull Bolt Users

OptimusPrime

For Silverback Airsoft SRS users, they will need to read this safety warning that the company issued... "Unlike traditional spring bolt action airsoft guns using the 90° sear system from Maruzen or the 45° sear system from Marui, the SRS is using a 'circular sear' system due to 'bullpup reasons' (and lack of space). The interface between the piston sear and the piston end is a circular surface. When you pull the trigger, the piston sear rotate around its axis until the piston is released. By geometry, this system is auto-lock and can resist to very strong springs.

Recently, a few of you contacted us due to excessively light trigger pull and slam-firing issues. It appears that the problem was the defective pistons end (pull bolt), part number SRS320. The contact surface has a wrong rotation center and after upgrade and/or mechanical wear, the system can’t lock the piston.

This issue may affect the following references:

SRS replicas:

  • SBA-BLT-04
  • SBA-BLT-05
  • SBA-BLT-06

SRS parts:

  • SBA-BBA-03
  • SBA-BBA-04
  • SBA-BBA-05
  • SBA-BBA-06
  • SBA-BPS-03
  • SBA-BPS-04

This is a possible safety issue and defective piston end SRS320 needs to be replaced. We strongly suggest you to inspect your piston end as not all of the defective parts will show signs of light trigger pull or slam-fire.

If you find it to be defective (with a ~45° contact surface instead of a correct ~19° contact surface) please contact us at [email protected], we will get back to you shortly with details regarding the free replacement procedure.

If your SRS is equipped with the defective piston end and showing sign of light trigger or slam-fire, please refrain from using it until you get the replacement part.

Corrective actions have already been taken on our side, all defective parts have been eliminated and all our authorized retailers’ partners are advised to make sure that all parts SRS320 now available are safe to use.

We’re very sorry for the inconvenience caused.

Silverback Airsoft Team"

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