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.

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Sale!
AT3 Pro-Builder AR-15 Lower Build Kit
(1)

AT3™ Pro-Builder™ Black AR-15 Lower Build Kit
$69.98
Only
$59.48
Out of Stock
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Sale!
AT3 Tactical Pistol Grip Screw for AR-15
(9)

AT3™ Mil-Spec AR-15 Pistol Grip Screw
$1.19
Only
$1.01
Out of Stock
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RECOMMENDED
Sale!
AT3™ Pro-Builder™ AR-15 Lower Parts Kit - No Grip or Trigger Assembly
(121)

AT3™ Pro-Builder™ AR-15 Lower Parts Kit – No Grip or Trigger Assembly
9 Options
from $29.99
from $25.49
Out of Stock
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Sale!
AT3™ Mil-Spec AR-15 Pivot Pin – 9 Colors Available
(7)

AT3™ Mil-Spec AR-15 Pivot Pin – 9 Colors Available
9 Options
from $3.49
from $2.97
Out of Stock
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RECOMMENDED
Sale!
(18)

AT3™ AR-15 Enhanced Billet Trigger Guard Assembly
9 Options
from $11.49
from $9.77
Out of Stock
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DAILY DEAL
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

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

Save 15%

2 Options
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Out of Stock
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Sale!
(72)

AT3™ Ambidextrous AR-15 Safety Selector – 9 Colors Available
9 Options
from $27.99
from $23.79
Out of Stock
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Sale!
(17)

AT3 Tactical AR-15 Magazine Catch and Button Assembly
9 Options
from $11.19
from $9.51
Out of Stock
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Magpul MOE Enhanced Trigger Guard
(10)

Magpul MOE Enhanced AR-15 Trigger Guard
3 Options
from $9.45
Out of Stock
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Sale!
(12)

AT3 Tactical AR-15 Takedown and Pivot Pin Assembly
9 Options
from $10.79
from $9.17
Out of Stock
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Sale!
(13)

AT3 Tactical AR-15 Bolt Catch Assembly with Spring, Plunger, and Roll Pin
9 Options
from $9.69
from $8.24
Out of Stock
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(7)

Radian Weapons Raptor + Talon Combo – Charging Handle & Safety Selector Kit
3 Options
from $134.95
Out of Stock
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Sale!
(22)

AT3™ AR-15 Mil-Spec Bolt Catch – 9 Colors Available
9 Options
from $7.49
from $6.37
Out of Stock
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(38)

Timber Creek Outdoors Ambidextrous 45/90 AR-15 Safety Selector
8 Options
from $31.99
Out of Stock
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(29)

Timber Creek Outdoors Small Parts Pack – Ambi Safety, Extended Mag Release, and Takedown Pins
8 Options
from $69.99
Out of Stock
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Sale!
(14)

AT3™ Mil-Spec AR-15 Magazine Catch – 9 Colors Available
9 Options
from $6.99
from $5.94
Out of Stock
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Sale!
(9)

AT3™ Mil-Spec AR-15 Takedown Pin – 9 Colors Available
9 Options
from $3.49
from $2.97
Out of Stock
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Sale!
Black AT3 Tactical Ambi Safety Selector Kit
(8)

AT3™ Ambidextrous AR-15 Safety Selector w/Spring & Detent – 9 Colors Available
9 Options
from $28.99
from $24.64
Out of Stock
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Radian Weapons Talon Ambidextrous Safety Selector 2-Lever Kit - AR15
(11)

Radian Weapons Talon Ambidextrous Safety Selector 2-Lever Kit – AR-15
4 Options
from $64.95
Out of Stock
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Sale!
(14)

AT3 Tactical AR-15 Safety Selector Assembly with Spring and Detent
9 Options
from $9.39
from $7.98
Out of Stock
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(18)

Timber Creek Outdoors Extended Magazine Release – AR-EMR
8 Options
from $15.99
Out of Stock
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(13)

Phase 5 Weapon Systems AR-15 Extended Bolt Release V3
3 Options
from $54.99
Out of Stock
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(5)

Strike Industries Ultra Light Takedown Pins for AR-15
4 Options
from $14.95
Out of Stock
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Sale!
(5)

AT3™ Mil-Spec AR-15 Magazine Catch Button – 9 Colors Available
9 Options
from $3.49
from $2.97
Out of Stock
View Product
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