CMMG Auto Sear Trip Kit Black 22 LR 22BA64D UPC 815835014630
Product Description
The CMMG Auto Sear Trip Kit (22BA64D) is a specialized mechanical accessory engineered to enable full-automatic function or binary trigger compatibility when operating CMMG .22LR AR-15 conversion kits and dedicated .22LR bolt group assemblies. Designed for registered NFA full-auto lower receivers, auto sears, or aftermarket binary trigger setups, this kit provides the precise physical contact interface required to actuate the auto sear lever as the blowback bolt returns to battery.
Manufactured from high-strength steel with a durable black oxide finish, the kit includes a precision-stamped trip bar and anti-bounce weight assembly. The trip bar attaches directly to the CMMG .22LR bolt carrier body, extending the mechanical surface rearward to physically trip the auto sear at the exact instant of full lockup/battery, ensuring safe and reliable continuous cyclic operation without pre-ignition or hammer-follow malfunctions.
In addition to auto sear trip functionality, the included anti-bounce weight installs into the rear section of the .22LR bolt carrier. This added mass mitigates bolt bounce during rapid cyclic movement, stabilizing the action and ensuring smooth ignition cycles with high-velocity .22LR rimfire ammunition. (Note: All NFA rules and regulations apply. Installation on non-NFA registered items with automatic sears is strictly regulated by federal law).
*Armorer Bench Notes & Real-World Staging Guidance:*
Fitment Matrix: Designed specifically for CMMG .22LR AR-15 conversion bolts and dedicated .22LR bolt assemblies. Compatible with registered M16 full-auto lower receivers, drop-in auto sears (DIAS), lightning links, and select binary trigger systems.
- Remove the CMMG .22LR bolt assembly from the upper receiver and clean all mating surfaces thoroughly.
- Install the anti-bounce weight into the rear chamber cavity of the .22LR bolt carrier body, ensuring correct alignment with the retaining hardware.
- Attach the auto sear trip plate to the underside/side indexing surface of the bolt body using the provided mounting screws or retention alignment clips.
- Function-check the assembly manually in an unloaded lower receiver to verify the trip bar smoothly engages and releases the auto sear arm without binding or dragging against receiver walls.
Key Features
- Full-Auto & Binary Compatibility: Enables auto sear tripping and reliable cycling with registered NFA lower receivers and binary triggers.
- Anti-Bounce Weight Included: Stabilizes bolt cycling speed and prevents bolt bounce during high-rate-of-fire operation.
- Heavy-Duty Steel Construction: Precision-formed steel components withstand severe cyclic vibration and impact stress.
- Black Oxide Finish: Non-reflective finish provides wear resistance and corrosion protection against harsh propellant gases.
- Direct Bolt Integration: Engineered specifically for seamless mounting onto CMMG .22LR rimfire conversion bolts.
Product Specifications
- Brand: CMMG
- Model/Series: Auto Sear Trip Kit
- MPN / SKU: 22BA64D
- UPC: 815835014630
- Caliber: .22 Long Rifle (.22LR)
- Platform Fitment: CMMG .22LR Conversion Bolts / AR-15 / M16 Full-Auto Lowers
- Material: High-Strength Steel
- Finish/Color: Black Oxide
- Country of Origin: United States
