CMMG

CMMG Zeroed AR-15 Bolt Catch KIT

Cmmg Zeroed Ar-15 Bolt Catch Kit - Bolt Catch for AR-15 - view 1
Cmmg Zeroed Ar-15 Bolt Catch Kit - Bolt Catch for AR-15 - view 2
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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.

Specifications

MPN55AFF19
TypeStandard
MaterialSteel

Available Merchants(6)

Prices checked

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Classic Firearms logo
Classic Firearms
Shipping varies
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In Stock
$15.65
Palmetto State Armory logo
Palmetto State Armory
$9.99 shipping (free over $99)
Shipping Speed
In Stock
$16.59
Brownells logo
Brownells
Free shipping over $99
Shipping Speed
In Stock
$18.08
CM
CMMG
Free shipping over $100
Shipping Speed
In Stock
$18.95
Ammunition Depot logo
Ammunition Depot
~$28.90 est. shipping
Shipping Speed
In Stock
$22.49
Optics Planet logo
Optics Planet
Free shipping over $49
Shipping Speed
In Stock
$27.49

October 2026 on GunPartPicker

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.

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Updated · from real builds on GunPartPicker · Prices checked · refreshed daily across 37 retailers

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 builds that include this one

Build Configuration Breakdown

Aggregated and anonymized data showing how builders use this product

Platform

94.9%
AR-1594.9%
AR-103.4%
AR-91.7%

Caliber

72.3%
5.56 NATO72.3%
300 Blackout10.6%
.223 Wylde8.5%
.308 Win4.3%
.223 Remington2.1%
Other2.1%

Gas System

64.7%
Mid-Length64.7%
Carbine17.6%
Rifle11.8%
Pistol5.9%

Builds Featuring This Part

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Builds in the community that include the Cmmg Zeroed Ar-15 Bolt Catch Kit

BuildPartsTotal
Truck gun 16" build
Truck gun 16"
22$878.30
recce 16" 5.56 build
recce 16" 5.56
20$1913.97
Second 7.62x39mm build build
Second 7.62x39mm build
21$1342.99
second build build
second build
19$2371.59
14.5" build build
14.5" build
22$2521.17

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