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SKU: 430107842
This replacement spring is intended for setups that need reduced bolt catch resistance to help softer sprung magazines engage the catch more consistently after the last round. It is described as a direct substitute for the stock bolt catch spring and is meant to work with the Catch22 in compatible applications. The product notes cite magazines such as the CMMG Gen2 and KRISS Defiance DMK22 as examples where a lighter spring may be useful. It is a simple, purpose-built part for shooters tuning their rimfire setup for reliable bolt catch function without changing the rest of the system.
Direct Replacement
For the stock bolt catch
Use Softer
Sprung magazines
Helps Magazines
Like CMMG Gen2 and KRISS
Compatible Catch22
The Catch22 system
No Adverse
Effects noted from switching to
It is a direct replacement for the stock bolt catch spring, intended to reduce catch resistance when using softer sprung magazines with the Catch22.
The description specifically mentions CMMG Gen2 and KRISS Defiance DMK22 magazines as examples that may need a bit of help to consistently engage the bolt catch.
The description says magazines like the S&W 15-22 have a strong enough spring to solidly engage the bolt catch after the last round is fired, so this lighter spring is not presented as necessary for that example.
The provided description states that there aren't any adverse effects from switching to the lighter spring.
The description refers to using this spring with the Catch22, but it does not say the Catch22 is included.