Brownells AR-15 Bolt Catch Mil-Spec
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Brownells
Overview
The Brownells AR-15 Bolt Catch is a Mil-Spec component designed to provide reliable functionality in your firearm. It ensures the bolt remains locked to the rear after the last round is fired, allowing for quick and efficient magazine changes. This bolt catch is often found in mid-length gas system builds chambered in 5.56 NATO, where reliability and ease of use are essential for the shooter.
Specifications
August 2026 on GunPartPicker
Brownells AR-15 Bolt Catch Mil-Spec ranked #21 of the 54 bolt catches builders added on GunPartPicker in August 2026. Builders have been adding it to their builds on GunPartPicker since February 2026. All time, it ranks #23 of the 95 bolt catches builders have added. Builds with this bolt catch are split between 5.56 NATO (50%) and 6mm ARC (33%), mostly on rifle-length gas (67%, then mid-length 33%), and mostly AR-15 (67%, then AR-10 17%).
Availability is good: it was in stock at one retailer or another nearly every day in August 2026, and today only Optics Planet has it in stock. The best price crept up from $3.73 to $10.99 over August 2026. Buying today, the lowest price is $5.99 at Optics Planet, above August's low of $3.73, so a better deal may come back.
Updated · from real builds on GunPartPicker · Prices checked · refreshed daily across 35 retailers
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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
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Build Configuration Breakdown
Aggregated and anonymized data showing how builders use this product
PlatformBased on real build data showing which platform (AR-15, AR-10, AR-9) builders pair with this product.
CaliberBased on real build data showing which calibers builders choose alongside this product.
Gas SystemBased on real build data showing which gas system lengths builders use with this product.
Builds Featuring This Part
See all 2 →Builds in the community that include the Brownells Ar-15 Bolt Catch Mil-Spec
| Build | Parts | Total |
|---|---|---|
 | 30 | $7804.33 |
| 19 | $2361.55 |
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