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CMMG
Overview
The CMMG Zeroed AR-15 Bolt Catch Kit is a standard steel bolt catch designed to securely hold the bolt in the rearward position after the last round is fired, allowing for quick and efficient reloading. This component is essential for reliable function in your AR-15 platform, ensuring that the shooter can easily identify when the magazine is empty. You’ll often find this bolt catch in builds featuring a mid-length gas system and chambered in 5.56 NATO, complementing the overall performance of the rifle.
Prices checked
CMMG Zeroed AR-15 Bolt Catch KIT ranked #15 of the 75 bolt catches builders added on GunPartPicker in October 2026, behind the LBE Unlimited AR-15 Bolt Catch Assembly, Black - ARBCASY, with about 1% of all bolt catches added to builds. Down from #9 in September. Builds with this bolt catch are mostly chambered in 5.56 NATO (72%, then 300 Blackout 11%), mostly on mid-length gas (65%, then carbine-length 18%), and mostly AR-15 (95%).
Availability is good: it was in stock at one retailer or another nearly every time we checked in October 2026, and today all 6 retailers we track have it in stock. Prices barely moved in October 2026, holding around $15.65, with no real sale all month. Buying today, the lowest price is $15.65 at Classic Firearms, which matches the best price we saw in October.
Updated · from real builds on GunPartPicker · Prices checked · refreshed daily across 37 retailers
We ranked every bolt catch by how often it shows up in real builds on GunPartPicker.
Read the guide: AR-15 Bolt Catch Guide →The part most often added in each category by the builds that include this one

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Aggregated and anonymized data showing how builders use this product
Builds in the community that include the Cmmg Zeroed Ar-15 Bolt Catch Kit
| Build | Parts | Total |
|---|---|---|
![]() | 22 | $878.30 |
![]() | 20 | $1913.97 |
![]() | 21 | $1342.99 |
![]() | 19 | $2371.59 |
![]() | 22 | $2521.17 |
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