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The CMMG Auto Sear Trip Kit 22ARC is a small but important piece for anyone running a CMMG .22LR conversion or dedicated .22 upper. It bundles two parts that work together: an auto sear trip that disengages the hammer from the auto sear at the correct point in the cycle, and an anti-bounce weight that settles the bolt after it closes into battery. Both are machined from stainless steel, so they hold up to the kind of repetitive cycling rimfire AR shooting throws at them.
The magic here is timing and consistency. The sear trip releases the hammer at the right moment so the action cycles the way it should, while the anti-bounce weight uses a dead-blow style action to stop the bolt from bouncing back after it seats. That bounce is a common source of light strikes and hiccups in .22 AR setups, so cutting it down goes a long way toward reliable feeding. The anti-bounce weight also doubles as a forward assist adapter on compatible builds, so you get two functions out of one piece.
This kit is built specifically for CMMG .22LR AR conversion kits and dedicated .22LR uppers, and it's meant to work in conjunction with a select-fire trigger group. It is not designed for use with forced reset triggers or drop-in style aftermarket triggers, so it's worth confirming your setup matches before you order. Some drop-in auto sear configurations may need the extended rear forward assist tooth trimmed to fit a notched frame properly.
Installation is quick, and once it's in, folks tend to report smooth, butter-like cycling with fewer stoppages. It's a targeted upgrade rather than a whole system, so if you've already invested in a CMMG .22 conversion and want it to run right, this is the piece that ties the timing and cycling together. Stainless construction means it'll keep doing the job round after round.
It handles the timing and cycling of a CMMG .22LR AR conversion. The auto sear trip disengages the hammer from the auto sear at the proper moment, and the anti-bounce weight uses a dead-blow action to keep the bolt from bouncing after it closes into battery. Together they promote smoother, more reliable cycling.
This kit is designed to work with select-fire trigger groups when paired with a CMMG .22LR conversion or dedicated .22 upper. It is not designed for use with forced reset triggers or Super Safeties. Confirm your specific setup before ordering, since not every drop-in configuration will function correctly.
Yes. The anti-bounce weight pulls double duty as a forward assist adapter on compatible builds. On some .22LR conversions with a non-notched frame, the extended rear forward assist tooth may need to be removed to fit properly.
It's all stainless steel construction. That durability matters in a rimfire AR application, since the parts see a lot of repeated cycling and the stainless holds up round after round.
| UPC | 815835014630 |
|---|---|
| Manufacturer | |
| Manufacturer Part Number | 22BA64D |
| Shipping Weight | 0.075 |
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