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 Tactical Ambi AR-15 Lower Build Kit - No Stock

AT3 Tactical Ambi AR-15 Lower Build Kit – No Stock
$115.15
Only
$97.88
Out of Stock
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Sale!
AT3 Tactical AR-15 Lower Build Kit - Magpul MOE K Furniture

AT3 Tactical AR-15 Lower Build Kit – Magpul MOE K Furniture
$150.97
Only
$128.32
Out of Stock
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RECOMMENDED
Sale!
AT3™ Pro-Builder™ AR-15 Lower Parts Kit - No Grip or Trigger Assembly
(123)

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 Tactical MIL-SPEC AR-15 Lower Build Kit - No Stock

AT3 Tactical MIL-SPEC AR-15 Lower Build Kit – No Stock
$97.28
Only
$82.69
Out of Stock
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Sale!
AT3 Tactical AR-15 Lower Build Kit - Fab Defense Furniture

AT3 Tactical AR-15 Lower Build Kit – Fab Defense Furniture
$165.72
Only
$140.86
Out of Stock
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Sale!
AT3 Tactical AR-15 Lower Build Kit - UTG Furniture

AT3 Tactical AR-15 Lower Build Kit – UTG Furniture
$129.12
Only
$109.75
Out of Stock
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Sale!
AT3 Tactical A2 Retro AR-15 Lower Build Kit

AT3 Tactical A2 Retro AR-15 Lower Build Kit
$133.82
Only
$113.75
Out of Stock
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Sale!
AT3 Tactical MIL-SPEC AR-15 Lower Build Kit

AT3 Tactical MIL-SPEC AR-15 Lower Build Kit
$109.17
Only
$92.79
Out of Stock
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Sale!
AT3 Tactical MIL-SPEC AR-15 Lower Build Kit w/Brace

AT3 Tactical MIL-SPEC AR-15 Lower Build Kit w/Brace
$145.69
Only
$123.84
Out of Stock
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Sale!
AT3 Tactical AR-15 Lower Build Kit - B5 Furniture

AT3 Tactical AR-15 Lower Build Kit – B5 Furniture
$158.02
Only
$134.32
Out of Stock
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Sale!
AT3 Tactical AR-15 Lower Build Kit - BCM Furniture

AT3 Tactical AR-15 Lower Build Kit – BCM Furniture
$157.13
Only
$133.56
Out of Stock
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Sale!
AT3 Tactical AR-15 Magazine Catch Kit – No Button

AT3 Tactical AR-15 Magazine Catch Kit – No Button
$6.95
Only
$5.91
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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Sale!
AT3 Pro-Builder AR-15 Lower Build Kit
(2)

AT3™ Pro-Builder™ Black AR-15 Lower Build Kit
$69.98
Only
$59.48
Out of Stock
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Sale!
(73)

AT3™ Ambidextrous AR-15 Safety Selector – 9 Colors Available
9 Options
from $27.99
from $23.79
Out of Stock
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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
2 Options
from $145.99
Out of Stock
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Sale!
(23)

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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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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Sale!
(19)

AT3 Tactical AR-15 Magazine Catch and Button Assembly
9 Options
from $11.19
from $9.51
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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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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(7)

Radian Weapons Raptor + Talon Combo – Charging Handle & Safety Selector Kit
3 Options
from $134.95
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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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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