D
Dbgunslove it
Reviewed on April 27, 2026Verified with Build
perfect mate to my upper
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American Defense UIC Billet Lower Receiver - Ambidextrous
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Ships to a dealer, not to you
This is a serialized firearm.
American Defense
Overview
The American Defense UIC Billet Lower Receiver is a stripped lower designed for the AR-15 platform, crafted from billet aluminum for enhanced strength and precision. Its ambidextrous controls make it suitable for both right- and left-handed shooters, providing versatility in handling. This lower receiver is a solid choice for a variety of builds, particularly those utilizing a carbine gas system and multi-caliber configurations.
Specifications
MPN8619
StyleBillet
ControlsAmbidextrous
AssemblyStripped
PlatformAR-15
CaliberMulti
MaterialBillet Aluminum
Available Merchants(3)
Prices checked
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August 2026 on GunPartPicker
American Defense UIC Billet Lower Receiver - Ambidextrous ranked #23 of the 507 lower receivers builders added on GunPartPicker in August 2026, behind the Radian Weapons ADAC-15 Stripped Lower Receiver - Gray, .223 Remington/5.56x45mm, Premium Quality for Reliable and Accurate AR Builds - R0388, with about 1 in every 125 lower receivers added to builds. Down from #22 in July. Builds with this lower receiver are nearly all chambered in 5.56 NATO, nearly all on mid-length gas, and nearly all AR-15.
Today none of the 3 retailers we track has it in stock right now. Listed prices start at $37.99 at Sportsmans Outdoor Superstore for when it comes back.
Updated · from real builds on GunPartPicker · Prices checked · refreshed daily across 35 retailers
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Frequently Built With
The part most often added in each category by the 153 builds that include this one
CMMG AR-15 Mil-Spec Trigger KIT
Trigger$28in 16 builds
Magpul MOE K2 Grip Polymer Gray
Pistol Grip$15in 14 builds
Timber Creek Outdoors Ambidextrous Safety Selector - Black
Safety$20in 17 builds
Strike Industries Ambidextrous Magazine Release, Black - ARAMBIMRBK
Magazine Release$38in 12 builds
Bravo Company Mfg Upper Receiver Assembly w/ Laser T-Markings, Hard Coated Anodized - 4-UR-M4
Upper Receiver$129 · out of stockin 12 builds
CMMG AR-15 HD Pivot and Takedown Pin Parts KIT - 55AFF3B
Takedown Pin$15in 26 builds
Builds Featuring This Part
See all 6 →Builds in the community that include the American Defense UIC Billet Lower Receiver - Ambidextrous
| Build | Parts | Total |
|---|---|---|
 | 21 | $815.71 |
 | 24 | $1319.05 |
 | 22 | $1703.15 |
 | 16 | $824.48 |
 | 26 | $2112.86 |
 | 20 | $810.43 |
Customer reviews
5.0out of 5
2 global ratings
Top reviews
B
BIGBLUEDODGE1997ADM UIC billet ambi clean
Reviewed on March 6, 2026Verified with Build
American Defense UIC billet ambi lower has clean and even anodize. The ambi controls work without modification. Flared mag well speeds reloads. Mates with a quality upper with zero detectable play at the takedown pins.
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