Image unavailable
Ar-15 Lower Parts Kit W/ Geissele B-Gc Competition Trigger
Our editorial team reviews specifications, product data, and field-use information to keep pages accurate.
$262.49
View on Brownells
You'll be taken to Brownells to complete your purchase.
Hunter's Outpost earns a commission from affiliate links at no extra cost to you.
SKU: 100022961
Overview
Built for assembling or refreshing an AR-15 lower, this 5.56 NATO parts kit brings together the core mil-spec components needed for a clean, organized install. The included Geissele B-Gc Competition Trigger makes it especially relevant for shooters setting up a rifle with a focus on competition use, while the color-coded packaging helps keep the small parts sorted during the build. It is a practical option for serious builders who want a complete lower receiver parts set from a Made-in-the-USA source. The kit is aimed at assembly work rather than broad accessory use, so it fits best when the goal is a dedicated rifle build or rebuild.
Why Hunters Choose the Brownells
Made-in-the-usa Mil-spec
Parts support a complete AR-15
Color-coded Packaging
Helps organize parts for easier
Includes Core
Lower receiver components such as
Suitable 5.56
NATO AR-15 lower receiver assembly
Packaged As
Comprehensive parts kit from Brownells
Key Features
- 5.56 NATO AR-15 lower receiver parts kit for building or rebuilding an AR-15 rifle.
- Includes high-quality, Made-in-the-USA, mil-spec parts.
- Packaged in color-coded bags for easier part identification during installation.
- Contains lower receiver components including pins, springs, bolt catch, and magazine catch parts.
- Includes trigger guard assembly, safety selector, selector detent, and grip screw hardware.
- Manufactured by Brownells.
Best Used For
- AR-15 builders assembling a lower receiver from individual parts and a trigger upgrade
- Hunters rebuilding a 5.56 NATO rifle with a complete lower parts kit
- Users who want organized, color-coded parts for a straightforward installation process
- Shooters replacing worn lower receiver components during a rifle rebuild
Specifications
| Bolt Catch | Included |
|---|---|
| Bolt Catch Plunger | Included |
| Bolt Catch Spring | Included |
| Bolt Catch Spring Pin | Included |
| Buffer Retainer | Included |
| Buffer Retainer Spring | Included |
| Caliber | 5.56 NATO |
| Color Coded Packaging | Yes |
| Contains Magazine Catch Button | Included |
| Contains Magazine Catch Spring | Included |
| Grip Screw | Included |
| Grip Screw Washer | Included |
| Made In Usa | Yes |
| Magazine Catch | Included |
| Magazine Catch Button | Included |
| Magazine Catch Spring | Included |
| Mil Spec | Yes |
| Platform | AR-15 |
| Product Type | Lower receiver parts kit |
| Receiver Pivot Pin | Included |
| Safety Selector | Included |
| Selector Detent | Included |
| Selector Detent Spring | Included |
| Takedown Pin | Included |
| Takedown Pin Detent | 2 included |
| Takedown Pin Detent Spring | 2 included |
| Trigger | Geissele B-Gc Competition Trigger |
| Trigger Guard Assembly | Included |
| Triggerguard Pivot Spring Pin | Included |
Pros
- Made-in-the-USA mil-spec parts support a complete AR-15 lower receiver build or rebuild.
- Color-coded packaging helps organize parts for easier installation and identification.
- Includes core lower receiver components such as pins, springs, catches, and selector parts.
- Suitable for 5.56 NATO AR-15 lower receiver assembly.
- Packaged as a comprehensive parts kit from Brownells.
Considerations & Trade-offs
- This is a lower receiver parts kit only, so it is intended for building or rebuilding an AR-15 lower rather than a complete rifle.
- The included parts are described as mil-spec, which supports standard compatibility, but the kit does not add any performance features beyond the listed components.
- The product title references a Geissele B-Gc Competition Trigger, but the provided description and parts list do not clearly detail the trigger itself, so buyers should verify exactly what is included before ordering.
- Color-coded packaging may make installation easier, but it does not change the need for careful parts identification and proper assembly during the build.
Suggested Comparisons
- AR-15 lower parts kit
- AR-15 trigger upgrade
- AR-15 build components
- AR-15 rebuild parts
Suggested Accessories
- Lower receiver parts kit
- AR-15 trigger
- AR-15 lower receiver assembly tools
- Small parts organizer
Frequently Asked Questions
What parts are included in this AR-15 lower parts kit?
The kit includes the lower receiver parts listed in the product data: takedown pin, receiver pivot pin, takedown pin detent (2), takedown pin detent spring (2), bolt catch, bolt catch plunger, bolt catch spring pin, bolt catch spring, buffer retainer, buffer retainer spring, magazine catch, magazine catch spring, magazine catch button, trigger guard assembly, triggerguard pivot spring pin, safety selector, selector detent, selector detent spring, grip screw washer, and grip screw.
Is this kit intended for a 5.56 NATO AR-15 build?
Yes. The product is described as a 5.56 NATO AR-15 lower receiver parts kit.
Does this kit include a trigger?
The product title says it is sold with a Geissele B-Gc Competition Trigger, but the provided long description does not list the trigger in the included parts. Based on the source data, the trigger is indicated in the title but not detailed in the parts list.
Is this a complete lower receiver kit for building or rebuilding an AR-15?
The description says it is an excellent choice for building or rebuilding an AR-15 rifle. The included parts list covers many lower receiver components, but the source data does not state that every possible lower assembly component is included.
What does 'Made-in-the-USA' mean for this kit?
The product description states that the kit is comprised of high-quality, Made-in-the-USA, mil-spec parts. No additional manufacturing details are provided in the source data.