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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 289-312 of 1833

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  1. Armaspec SMB Gen 3 Buffer-9 Kit, Black - High-Performance Buffer Kit - ARM268-9

    Armaspec SMB Gen 3 Buffer-9 Kit, Black - High-Performance Buffer Kit - ARM268-9

    Regular Price $96.99 Special Price $86.99
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  2. Armaspec SMB Gen 3 Buffer-H2 Kit, Black - Superior Recoil Control with Advanced Buffer Technology - ARM268-H2

    Armaspec SMB Gen 3 Buffer-H2 Kit, Black - Superior Recoil Control with Advanced Buffer Technology - ARM268-H2

    Rating:
    100%
    (3)
    Regular Price $96.99 Special Price $86.99
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  3. Armaspec SMB Gen 3 Buffer-C Kit, Black - Reliable Buffer System - ARM268-C

    Armaspec SMB Gen 3 Buffer-C Kit, Black - Reliable Buffer System - ARM268-C

    Rating:
    100%
    (1)
    Regular Price $96.99 Special Price $86.99
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  4. Armaspec A5 Spacer 0.75" in Black - High-Quality Spacer for A5 Buffer Tube Systems - ARM154-RFL/A5

    Armaspec A5 Spacer 0.75" in Black - High-Quality Spacer for A5 Buffer Tube Systems - ARM154-RFL/A5

    Regular Price $8.99 Special Price $6.99
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  5. Armaspec Fixed Stock to Carbine Spacer Black - Reliable Spacer for Converting Fixed Stocks to Carbine Length for Versatile Shooting - ARM154-RFL

    Armaspec Fixed Stock to Carbine Spacer Black - Reliable Spacer for Converting Fixed Stocks to Carbine Length for Versatile Shooting - ARM154-RFL

    Rating:
    100%
    (2)
    Regular Price $8.99 Special Price $6.99
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  6. Rise Armament Reliant Pro Trigger - Single-Stage Flat Blade in Black/Flat Dark Earth for Superior Accuracy and Tactical Style - RA-735-F-BC

    Rise Armament Reliant Pro Trigger - Single-Stage Flat Blade in Black/Flat Dark Earth for Superior Accuracy and Tactical Style - RA-735-F-BC

    Regular Price $272.99 Special Price $199.99
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  7. TriggerTech Two-Stage Pro Curved Trigger - Black for Enhanced Precision, Superior Control, and Performance - AR0TRB14NNP

    TriggerTech Two-Stage Pro Curved Trigger - Black for Enhanced Precision, Superior Control, and Performance - AR0TRB14NNP

    Rating:
    100%
    (1)
    Regular Price $361.99 Special Price $325.99
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  8. Odin Works XMR Gen 3 Extended Magazine Release - Enhanced Extended Release Button for AR-15/AR-10 - ACC-XMR-3-FDE

    Odin Works XMR Gen 3 Extended Magazine Release - Enhanced Extended Release Button for AR-15/AR-10 - ACC-XMR-3-FDE

    Rating:
    100%
    (1)
    Regular Price $26.99 Special Price $23.99
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  9. Odin Works Adjustable Buffer, Red - Enhanced Performance and Customization - OS-ABS-AR15-RIFLE

    Odin Works Adjustable Buffer, Red - Enhanced Performance and Customization - OS-ABS-AR15-RIFLE

    Regular Price $99.99 Special Price $89.99
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  10. CMC Triggers Gold Finger Single-Stage Curved Drop-In Trigger - for Enhanced Precision, Performance and Custom Style - 91501GF

    CMC Triggers Gold Finger Single-Stage Curved Drop-In Trigger - for Enhanced Precision, Performance and Custom Style - 91501GF

    Regular Price $215.99 Special Price $193.99
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  11. Angstadt Arms Enhanced Mil-Spec PCC Trigger in Silver - Precision Upgrades for Performance, Accuracy, and Reliability - AAEMILPCCT

    Angstadt Arms Enhanced Mil-Spec PCC Trigger in Silver - Precision Upgrades for Performance, Accuracy, and Reliability - AAEMILPCCT

    Regular Price $66.99 Special Price $59.99
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  12. Rise Armament Magazine Release Button in Red - Stylish and Reliable Release Button for Improved Firearm Performance - RA010RR

    Rise Armament Magazine Release Button in Red - Stylish and Reliable Release Button for Improved Firearm Performance - RA010RR

    Rating:
    100%
    (1)
    Regular Price $8.99 Special Price $7.99
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  13. Magpul ESK Selector - Tactical Selector for Enhanced Performance and Durability - MAG1254-FDE

    Magpul ESK Selector - Tactical Selector for Enhanced Performance and Durability - MAG1254-FDE

    Rating:
    100%
    (4)
    Regular Price $53.99 Special Price $47.99
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  14. Magpul ESK Enhanced Selector Kit in Black - Upgraded Selector Kit for Improved Control and Functionality - MAG1254-BLK

    Magpul ESK Enhanced Selector Kit in Black - Upgraded Selector Kit for Improved Control and Functionality - MAG1254-BLK

    Regular Price $53.99 Special Price $47.99
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  15. Aim Sports Pistol Buffer Tube, Black - Lightweight and Sturdy Buffer Tube for Pistol - ARPTUB

    Aim Sports Pistol Buffer Tube, Black - Lightweight and Sturdy Buffer Tube for Pistol - ARPTUB

    Rating:
    70%
    (2)
    $14.99
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  16. B&T USA Enhanced Ambidextrous Bolt Catch Kit, Black - Improved Firearm Handling with Ambidextrous Bolt Catch - BAD-EBC-AMBI-KIT

    B&T USA Enhanced Ambidextrous Bolt Catch Kit, Black - Improved Firearm Handling with Ambidextrous Bolt Catch - BAD-EBC-AMBI-KIT

    Regular Price $55.99 Special Price $49.99
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  17. Strike Industries Pivot and Takedown Pin 0.37" x 1.24" for Knights Armament SR-25 in Black - Enhanced Pin Set for Precision - SI-AR10-EPTP-BK

    Strike Industries Pivot and Takedown Pin 0.37" x 1.24" for Knights Armament SR-25 in Black - Enhanced Pin Set for Precision - SI-AR10-EPTP-BK

    Rating:
    100%
    (1)
    Regular Price $22.99 Special Price $19.99
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  18. LBE Unlimited Replacement Trigger - Two-Stage Curved, Black for Precision and Enhanced Performance - AR2STG

    LBE Unlimited Replacement Trigger - Two-Stage Curved, Black for Precision and Enhanced Performance - AR2STG

    Rating:
    100%
    (1)
    Regular Price $102.99 Special Price $91.99
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  19. Maxim Defense Industries CQB Roller Delayed Blowback System Buffer - Superior Performance in Close Quarters - MXM47838

    Maxim Defense Industries CQB Roller Delayed Blowback System Buffer - Superior Performance in Close Quarters - MXM47838

    Regular Price $190.99 Special Price $171.99
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  20. Sons of Liberty Gun Works Trigger - Two-Stage, Black for Enhanced Precision and Performance - L2S

    Sons of Liberty Gun Works Trigger - Two-Stage, Black for Enhanced Precision and Performance - L2S

    Regular Price $176.99 Special Price $158.99
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  21. Allen Snap-On Recoil Pad Black - Easy-Install Recoil Pad for Enhanced Comfort and Effective Recoil Management - 18431

    Allen Snap-On Recoil Pad Black - Easy-Install Recoil Pad for Enhanced Comfort and Effective Recoil Management - 18431

    Rating:
    100%
    (5)
    Regular Price $16.99 Special Price $14.99
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  22. Forward Controls Design REF AR15/M16 Carbine Receiver Extension - REF

    Forward Controls Design REF AR15/M16 Carbine Receiver Extension - REF

    $66.50
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  23. Forward Controls Design CNF Castle Nut Improved Staking Notches - CNF-BLK

    Forward Controls Design CNF Castle Nut Improved Staking Notches - CNF-BLK

    Rating:
    100%
    (1)
    Regular Price $22.99 Special Price $19.99
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  24. Forward Controls Design Mag Release Button, Dimpled - EMR-H, AA (dimpled)

    Forward Controls Design Mag Release Button, Dimpled - EMR-H, AA (dimpled)

    Regular Price $18.99 Special Price $16.99
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Items 289-312 of 1833

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  1. Buffer Tube Assembly Parts 494
  2. Enhanced Parts 380
  3. Lower Receiver Assembly Parts 897
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