Big Fall Sale – Save up to 35% | Shop Now

Big Fall Sale – Save up to 35% | Shop Now

Black AR-15 Lower Receiver Parts

Black AR-15 lower parts kits for finishing out your lower receiver. AT3 uses parts that meet or exceed mil-spec in all the LPKs we offer.

Showing 1–24 of 164 results

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Sale!

AT3 Tactical Lower Parts Kit with 2 Stage Nickel Boron Trigger and Magpul MOE Grip - Curved Face - Black

(6)

AT3™ AR-15 2-Stage Lower Parts Kit with Nickel Boron Trigger and Magpul MOE Grip

RECOMMENDED

Sale!

AT3™ Pro-Builder™ AR-15 Lower Parts Kit - No Grip or Trigger Assembly

(128)

AT3™ Pro-Builder™ AR-15 Lower Parts Kit – No Grip or Trigger Assembly

Sale!

STNGR Ambidextrous AR-15 Lower Parts Kit - Ambi Mag Release and Safety

(2)

STNGR Ambidextrous AR-15 Lower Parts Kit

Sale!

AT3 Tactical Enhanced Lower Parts Kit with Nickel Teflon Trigger - Curved - Black

(27)

AT3™ Enhanced Lower Parts Kit with Nickel Teflon Trigger and Magpul MOE Grip for AR-15

Sale!

(5)

AT3 AR-15 Lower Build Kit – Magpul Stock and Grip, AT3 Lower Parts Kit and Buffer Assembly

Sale!

AT3 Tactical Lower Parts Kit With 2 Stage Nickel Boron Trigger

(25)

AT3™ 2-Stage AR-15 Lower Parts Kit with 4.5lb Nickel Boron Trigger – No Grip or Trigger Guard

DAILY DEAL

Strike Industries Modular Bolt Catch for AR-15

Ends Sun 10/4

Save 30%

(74)

AT3™ Ambidextrous AR-15 Safety Selector – 9 Colors Available

(23)

AT3™ AR-15 Mil-Spec Bolt Catch – 9 Colors Available

Rise Armament RAVE 140 3.5 Pound Single Stage Drop-In Trigger - Includes Anti-Walk Pins & Lower Parts Kit - No Grip - No Trigger Guard - Flat or Curved

(1)

Rise Armament RAVE 140 3.5 Pound Single Stage Drop-In Trigger – Includes Anti-Walk Pins & Lower Parts Kit – No Grip – No Trigger Guard – Flat or Curved

RECOMMENDED

(19)

AT3™ AR-15 Enhanced Billet Trigger Guard Assembly

(20)

AT3 Tactical AR-15 Magazine Catch and Button Assembly

(38)

Timber Creek Outdoors Ambidextrous 45/90 AR-15 Safety Selector

NEW

Ruger AR-15 Lower Parts Kit – GI Trigger & A2 Pistol Grip

(14)

AT3™ Mil-Spec AR-15 Magazine Catch – 9 Colors Available

(7)

Radian Weapons Raptor + Talon Combo – Charging Handle & Safety Selector Kit

(12)

AT3 Tactical AR-15 Takedown and Pivot Pin Assembly

Radian Weapons Talon Ambidextrous Safety Selector 2-Lever Kit - AR15

(12)

Radian Weapons Talon Ambidextrous Safety Selector 2-Lever Kit – AR-15

(13)

AT3 Tactical AR-15 Bolt Catch Assembly with Spring, Plunger, and Roll Pin

Magpul MOE Enhanced Trigger Guard

(12)

Magpul MOE Enhanced AR-15 Trigger Guard

AT3™ Mil-Spec AR-15 Pivot Pin – 9 Colors Available

(7)

AT3™ Mil-Spec AR-15 Pivot Pin – 9 Colors Available

(9)

AT3™ Mil-Spec AR-15 Takedown Pin – 9 Colors Available

(5)

AT3™ Mil-Spec AR-15 Magazine Catch Button – 9 Colors Available

(19)

Timber Creek Outdoors Extended Magazine Release – AR-EMR