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AR-15 Lower Parts

Please browse our selection of individual parts for your AR-15. We stock lower parts such as buffer tube assemblies, enhanced parts, and assembly parts for lower receivers. Choose from some top-selling brands like Palmetto State Armory, Armaspec, PSA Custom, Timber Creek, and much more.

Buffer Tube Assembly Parts

Buffer Tube Assembly Parts
Enhanced Parts

Enhanced Parts
Lower Receiver Assembly Parts

Lower Receiver Assembly Parts
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Items 337-360 of 1828

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  1. Tacfire Buffer Tube Castle Nut for AR-15 - Black, Essential for Assembly - MAR039

    Tacfire Buffer Tube Castle Nut for AR-15 - Black, Essential for Assembly - MAR039

    Rating:
    85%
    (13)
    Regular Price $3.99 Special Price $3.59
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  2. Strike Industries End Plate and Anti-Rotate Castle Nut for Receivers - SI-AR-UL-MFEP&ACN-FDE

    Strike Industries End Plate and Anti-Rotate Castle Nut for Receivers - SI-AR-UL-MFEP&ACN-FDE

    Regular Price $39.99 Special Price $35.99
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  3. Strike Industries End Plate and Anti-Rotate Castle Nut for Receivers, Red - SI-AR-UL-MFEP&ACN-RED

    Strike Industries End Plate and Anti-Rotate Castle Nut for Receivers, Red - SI-AR-UL-MFEP&ACN-RED

    Rating:
    100%
    (2)
    $35.95
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  4. Strike Industries AR Mil-Spec Buffer Housing for Mil-Spec Buffers, Red - SI-AR-BH-MIL-RED

    Strike Industries AR Mil-Spec Buffer Housing for Mil-Spec Buffers, Red - SI-AR-BH-MIL-RED

    $16.95
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  5. Strike Industries AR Mil-Spec Buffer Housing for Mil-Spec Buffers, Blue - SI-AR-BH-MIL-BLU

    Strike Industries AR Mil-Spec Buffer Housing for Mil-Spec Buffers, Blue - SI-AR-BH-MIL-BLU

    Regular Price $18.99 Special Price $16.99
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  6. Tacfire Short Buffer Tube System for AR-Style Pistols - Black, Compact Comfort - MAR139-C

    Tacfire Short Buffer Tube System for AR-Style Pistols - Black, Compact Comfort - MAR139-C

    Rating:
    100%
    (2)
    Regular Price $109.99 Special Price $99.99
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  7. Strike Industries TRIBUS Version 2 Castle Nut and End Plate for Buffer Tubes, Red - SI-AR-TRIBUS-RED

    Strike Industries TRIBUS Version 2 Castle Nut and End Plate for Buffer Tubes, Red - SI-AR-TRIBUS-RED

    $59.95
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  8. Radian Weapons Talon 45/90 Ambi Safety Selector 2 Lever Kit for AR-15/AR-10/SR25 - R0381

    Radian Weapons Talon 45/90 Ambi Safety Selector 2 Lever Kit for AR-15/AR-10/SR25 - R0381

    $69.99
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  9. Radian Weapons Talon 45/90 - GI Safety Selector for AR-15/AR-10/SR25, Radian Gray - R0592

    Radian Weapons Talon 45/90 - GI Safety Selector for AR-15/AR-10/SR25, Radian Gray - R0592

    Rating:
    100%
    (2)
    $44.99
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  10. NcStar Telestock Tube Commercial-Spec Grip Adapter for AR-15/Shotguns, Black - VG094

    NcStar Telestock Tube Commercial-Spec Grip Adapter for AR-15/Shotguns, Black - VG094

    Rating:
    100%
    (2)
    Regular Price $13.99 Special Price $12.39
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  11. LBE Unlimited Magazine Catch Spring for AR-15, Black - ARMCS20PK

    LBE Unlimited Magazine Catch Spring for AR-15, Black - ARMCS20PK

    Regular Price $7.99 Special Price $6.89
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  12. Hogue Contoured Trigger Guard for AR-15/M16, Black - 15099

    Hogue Contoured Trigger Guard for AR-15/M16, Black - 15099

    Rating:
    100%
    (1)
    Regular Price $12.99 Special Price $10.99
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  13. Tacfire Buffer for AR-15, Black Anodized - MAR043

    Tacfire Buffer for AR-15, Black Anodized - MAR043

    Rating:
    100%
    (1)
    Regular Price $9.99 Special Price $8.29
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  14. Strike Industries AR Picatinny Stock Adapter for ArmaLite Lower Receivers - SI-AR-PSA-BK

    Strike Industries AR Picatinny Stock Adapter for ArmaLite Lower Receivers - SI-AR-PSA-BK

    Rating:
    100%
    (2)
    Regular Price $57.99 Special Price $51.99
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  15. Tacfire Mil-Spec Buffer Tube for AR-15 - Matte Black, Built to Last - MAR040

    Tacfire Mil-Spec Buffer Tube for AR-15 - Matte Black, Built to Last - MAR040

    Rating:
    100%
    (28)
    Regular Price $15.99 Special Price $14.09
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  16. Tacfire Pistol Buffer Tube for AR-15 - Matte Black, Compact and Sturdy - MAR042

    Tacfire Pistol Buffer Tube for AR-15 - Matte Black, Compact and Sturdy - MAR042

    Rating:
    100%
    (5)
    Regular Price $16.99 Special Price $14.89
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  17. Tacfire Heavy Buffer for AR-15/M4 - Black Anodized, Superior Recoil Control - MAR044

    Tacfire Heavy Buffer for AR-15/M4 - Black Anodized, Superior Recoil Control - MAR044

    Rating:
    80%
    (2)
    Regular Price $12.99 Special Price $10.99
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  18. Tacfire 6-Position Mil-Spec Buffer Tube Kit for AR-15 - MAR047-A

    Tacfire 6-Position Mil-Spec Buffer Tube Kit for AR-15 - MAR047-A

    Rating:
    98%
    (25)
    Regular Price $26.99 Special Price $23.69
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  19. Tacfire Mil-Spec Pistol Buffer Tube Kit for AR-15, Black - MAR049-A

    Tacfire Mil-Spec Pistol Buffer Tube Kit for AR-15, Black - MAR049-A

    Rating:
    100%
    (5)
    Regular Price $27.99 Special Price $24.39
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  20. Sabre Claw Two-Stage Trigger - Black DLC Coated

    Sabre Claw Two-Stage Trigger - Black DLC Coated

    Rating:
    98%
    (80)
    $89.99
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  21. Rise Armament Advanced Performance Trigger, Red - RA-535-RED-ARP

    Rise Armament Advanced Performance Trigger, Red - RA-535-RED-ARP

    Rating:
    90%
    (4)
    Regular Price $289.99 Special Price $260.99
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  22. Rise Armament Rave Flat Trigger, Red - T017F-RED

    Rise Armament Rave Flat Trigger, Red - T017F-RED

    Rating:
    98%
    (11)
    Regular Price $156.99 Special Price $140.99
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  23. Rise Armament Rave Trigger, Red - T017-RED

    Rise Armament Rave Trigger, Red - T017-RED

    Rating:
    100%
    (6)
    Regular Price $156.99 Special Price $140.99
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  24. Rise Armament High Performance Trigger, Red - RA-434-RED-AWP

    Rise Armament High Performance Trigger, Red - RA-434-RED-AWP

    Rating:
    100%
    (2)
    Regular Price $179.99 Special Price $143.99
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Items 337-360 of 1828

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  1. Buffer Tube Assembly Parts 493
  2. Enhanced Parts 396
  3. Lower Receiver Assembly Parts 896
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