Colt AR15A4 Bolt Catch
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Colt
Overview
The Colt AR15A4 Bolt Catch is a critical component designed to hold the bolt carrier group in the rearward position after the last round is fired, allowing for quick and efficient magazine changes. Made from steel, this black bolt catch ensures durability and reliability in function, which is essential for maintaining proper operation in your AR-15. This part is commonly found in builds utilizing a carbine gas system and chambered in 5.56 NATO, making it a standard choice for those looking to optimize their firearm's performance.
Specifications
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Build history on GunPartPicker
Builders on GunPartPicker first added the Colt AR15A4 Bolt Catch to a build in March 2026.
Updated · from real builds on GunPartPicker
Not sure which bolt catch to pick?
We ranked every bolt catch by how often it shows up in real builds on GunPartPicker.
Read the guide: AR-15 Bolt Catch Guide →Frequently Built With
The part most often added in each category by the 3 builds that include this one
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Brownells M16 Bolt Carrier Group 5.56x45mm Nitride Mp
Builds Featuring This Part
See all 2 →Builds in the community that include the Colt Ar15a4 Bolt Catch
| Build | Parts | Total |
|---|---|---|
 | 20 | $2197.70 |
 | 16 | $1250.60 |
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