Geissele Automatics Border Patrol Rifle 08-423B 5.56 NATO 18" Barrel 0-Round Semi-Auto M-LOK A2 FH Black
User Ratings
No ratings yet
Be the first to review this product
The Geissele Automatics Border Patrol is a semi-automatic AR-15 pattern rifle built around an 18-inch cold hammer-forged barrel and chambered in 5.56 NATO. It uses a rifle-length gas system with a Geissele Super Compact Gas Block and features a 14.6-inch MK20 M-LOK rail for attaching accessories along the forend. The rifle comes with forged Super Duty upper and lower receivers, an ALG Advanced Combat Trigger, a BCM Mod 0 stock, B5 grip, and an A2 flash hider, and is shipped without a magazine.
- 18-inch cold hammer-forged 5.56 NATO barrel
- 14.6-inch MK20 M-LOK free-float handguard
- BCM Mod 0 stock and A2 flash hider configuration
Overall length ranges from roughly 34.5 to 37.5 inches depending on stock position, giving the Border Patrol a balanced, duty-style configuration suitable for a wide variety of rifle roles. Its combination of quality components and proven AR ergonomics makes it a solid choice for users seeking a robust 5.56 NATO platform.
Specifications
- Manufacturer:
- Geissele Automatics
- Category:
- lower-receiver
- Caliber:
- 5.56x45mm NATO
- Platforms:
- AR-15
- Length:
- 34.5" - 37.5"
- UPC:
- 810081134729
- MPN:
- 08-423B
- Required Component:
- Yes
- Complete Firearm:
- Yes
Parts Cabinet
Track parts you own or plan to buy.
Where to Buy
Sponsored
MantisX
The smart way to train your AR build
Built your rifle — now train it. BlackBeardX installs in minutes and turns your AR into a full dry fire system with smart feedback on every pull.
Shop BlackBeardXPrice History
Current
$1,549.99
Lowest
$1,549.99
Highest
$1,629.99
Price Alert
Sign in to save a target price and receive an email when this component drops.
Sign In to Set AlertWhat's Included in this Bundle
Similar Products
Griffin Armament MK2 Ambi Stripped AR-15 Lower Receiver - Ambidextrous Controls - Flared Magwell - Anodized Black - MK2AL
Griffin Armament
$189.99
Aero Precision Inc M4E1 223/5.56mm AR-15 Stripped Lower Receiver
Aero Precision
$108.50
Geissele Automatics Super Duty Stripped AR-15 Lower Receiver - Desert Dirt
Geissele Automatics
$200.00
AERO PRECISION AR-15 Gen 2 Stripped Lower Receiver - Matte Black
Aero Precision
$89.99
LMT MARS-L Ambidextrous AR-15 Stripped Lower Receiver
LMT
$342.00
PSA AR-15 "Stealth" Stripped Lower Receiver
Palmetto State Armory
$69.99
PSA AR-15 Lower Safe/Fire - 1728
Palmetto State Armory
$64.99
PSA AR-15 M4 Carbine Stripped Lower Receiver
Palmetto State Armory
$79.99
Builds Using This Part
No builds yet — be the first to use this part.
Related Guides
Guide
AR-10 Receiver Patterns: DPMS vs. Armalite Compatibility
The AR-10 has two incompatible receiver patterns — DPMS and Armalite — that look similar but do not share parts. This guide explains the differences and how to buy correctly.
6 min read
Guide
The AR-10 Platform: What It Is and How It Differs from the AR-15
A practical overview of the AR-10 — its origins, how it differs from the AR-15, available calibers, and when it makes more sense than a standard AR-15 build.
6 min read
Guide
AR-15 Components: A Complete Reference Guide
A comprehensive overview of every major component in an AR-15 build—including what's inside bolt carrier groups and parts kits—organized by assembly for new builders.
12 min read