Lightened Bolt Catch Spring

Less catch resistance for use with softer sprung mags Magazines like the S&W 15-22 have a strong enough spring to solidly engage the bolt catch after the last round is fired. Some magazines like the CMMG Gen2, and KRISS Defiance DMK22 need a bit of help to consistently engage the bolt catch. This spring is a direct replacement for the stock bolt catch spring and will allow you to use these magazines with the Catch22. There aren't any adverse effects from switching to the lighter spring. Mfg: Ar Catch22