CMMG Auto Sear Trip Kit for .22LR AR Conversion - High-Performance Upgrade for AR-15 Rifles

The CMMG Auto Sear Trip Kit for .22LR AR conversion is a specialized component designed to work with CMMG's .22 Long Rifle conversion system and compatible select-fire lower receivers. If you're running a registered auto-capable lower with a rimfire conversion upper, this trip kit is the missing piece that lets the mechanism function as designed—transforming your AR platform into a full-auto .22LR trainer or plinker. It's the kind of accessory that serious AR enthusiasts and those with proper federal licensing turn to for reliable performance in the semi-auto or full-auto realm.

This kit includes the auto trip component and an anti-bounce weight, working together to manage the hammer and sear engagement cycle. The anti-bounce weight is critical for smooth, consistent operation, especially during rapid fire or full-auto cycling. Whether you're burning through .22LR at the range, training on a reduced-recoil platform, or just enjoying the economics of rimfire shooting on an AR you already own, having the right trip kit ensures your conversion system behaves predictably and reliably.

CMMG .22 conversions have earned a solid reputation for turning AR-15s into economical, low-recoil shooting systems without sacrificing the ergonomics and controls shooters know. This trip kit is purpose-built to complement that ecosystem, so if you've invested in the conversion upper, adding this component unlocks full functionality with a compatible select-fire lower.

What's Included

• Auto sear trip component for full-auto capable systems
• Anti-bounce weight to ensure smooth cycling and reliability

Frequently Asked Questions

What firearms is the CMMG Auto Sear Trip Kit compatible with?

This trip kit is designed to work with CMMG .22LR AR conversion uppers paired with a select-fire lower receiver group. It is not functional with standard semi-auto-only lower receivers.

Do I need a special lower receiver to use this kit?

Yes. This kit requires a compatible select-fire lower group to function. Semi-auto-only lowers cannot use this component.

What does the anti-bounce weight do?

The anti-bounce weight helps stabilize the hammer and sear engagement during the firing cycle, reducing bounce and promoting consistent, reliable operation—especially important during sustained or rapid fire.

Can I use this kit with other .22LR conversion systems?

This kit is designed specifically for CMMG .22LR conversion systems. Compatibility with other manufacturers' conversions is not covered by the supplied information.