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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 673-696 of 1828

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  1. Maxim Defense Industries JP Tungsten/Stainless Steel Heavy Weight Silent Captured Spring - MXM47571

    Maxim Defense Industries JP Tungsten/Stainless Steel Heavy Weight Silent Captured Spring - MXM47571

    Regular Price $174.99 Special Price $156.99
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  2. Maxim Defense Industries JP Tungsten/Stainless Steel Standard Weight Silent Captured Spring - MXM47570

    Maxim Defense Industries JP Tungsten/Stainless Steel Standard Weight Silent Captured Spring - MXM47570

    Rating:
    100%
    (1)
    Regular Price $144.99 Special Price $129.99
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  3. Strike Industries 20-Piece Lower Receiver Gunsmith Spring Kit, Black - AR-LRSK-PRO

    Strike Industries 20-Piece Lower Receiver Gunsmith Spring Kit, Black - AR-LRSK-PRO

    Rating:
    100%
    (2)
    Regular Price $106.99 Special Price $95.99
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  4. Stern Defense Hybrid 2 Stage Nickel Boron Drop In Trigger- H2S NIB

    Stern Defense Hybrid 2 Stage Nickel Boron Drop In Trigger- H2S NIB

    Rating:
    90%
    (2)
    $167.00
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  5. CMMG Stainless Steel Buffer Assembly for AR-15 Style Rifle - 55CA9A7

    CMMG Stainless Steel Buffer Assembly for AR-15 Style Rifle - 55CA9A7

    Regular Price $30.99 Special Price $27.79
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  6. CMMG Receiver Extension for A1 Style Rifle, Black - 55CA9B7

    CMMG Receiver Extension for A1 Style Rifle, Black - 55CA9B7

    Regular Price $43.99 Special Price $39.39
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  7. CMMG Receiver Extension for M4 Carbine Style Rifle, Black - 55CA9D7

    CMMG Receiver Extension for M4 Carbine Style Rifle, Black - 55CA9D7

    Regular Price $39.99 Special Price $35.69
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  8. CMMG Upper Pins and Springs Parts Kit - 55AFF2F

    CMMG Upper Pins and Springs Parts Kit - 55AFF2F

    Rating:
    95%
    (4)
    Regular Price $13.99 Special Price $12.39
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  9. CMMG HD Pivot and Takedown Pin Parts Kit, Black - 38AFF31

    CMMG HD Pivot and Takedown Pin Parts Kit, Black - 38AFF31

    Rating:
    100%
    (2)
    Regular Price $23.99 Special Price $21.49
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  10. Rise Armament Advanced-Performance Trigger, Hard Coat Anodized - RA-535

    Rise Armament Advanced-Performance Trigger, Hard Coat Anodized - RA-535

    Rating:
    100%
    (11)
    Regular Price $278.99 Special Price $250.99
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  11. Phase 5 90 degree Ambi Safety Selector, Black - SAFE90-BLK

    Phase 5 90 degree Ambi Safety Selector, Black - SAFE90-BLK

    Rating:
    60%
    (2)
    $49.99
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  12. Phase 5 Sloped Quick Disconnect End Plate, Black - SQD-EP

    Phase 5 Sloped Quick Disconnect End Plate, Black - SQD-EP

    Rating:
    100%
    (1)
    Regular Price $51.99 Special Price $45.99
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  13. Phase 5 Version 3 Extended Bolt Release, 2" - EBRV3

    Phase 5 Version 3 Extended Bolt Release, 2" - EBRV3

    Rating:
    98%
    (25)
    Regular Price $62.99 Special Price $55.99
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  14. Phase 5 Version 2 Extended Bolt Release, 2.15" - EBRV2

    Phase 5 Version 2 Extended Bolt Release, 2.15" - EBRV2

    Rating:
    100%
    (5)
    Regular Price $67.99 Special Price $60.99
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  15. PSA 2 Stage Nickel Boron Trigger Assembly

    PSA 2 Stage Nickel Boron Trigger Assembly

    Rating:
    94%
    (527)
    $79.99
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  16. CMMG AR-15 Lower Springs and Pins Kit - 55AFF75

    CMMG AR-15 Lower Springs and Pins Kit - 55AFF75

    Rating:
    97%
    (54)
    Regular Price $13.99 Special Price $12.39
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  17. Timney Targa AR-15 2 Stage Short Curved Trigger, Black - 662S

    Timney Targa AR-15 2 Stage Short Curved Trigger, Black - 662S

    Rating:
    100%
    (3)
    $224.99
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  18. Timney AR-15 Small Pin Solid 3 lb. Competition Trigger - 667S

    Timney AR-15 Small Pin Solid 3 lb. Competition Trigger - 667S

    Rating:
    97%
    (7)
    $199.99
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  19. Odin Works Adjustable AR-10 Buffer in Stainless Steel

    Odin Works Adjustable AR-10 Buffer, Stainless Steel - OS-ABS-AR10

    Rating:
    84%
    (5)
    Regular Price $84.99 Special Price $75.99
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  20. Odin Works Adjustable AR-15 Heavy Buffer in Stainless Steel

    Odin Works Adjustable AR-15 Heavy Buffer, Stainless Steel - OS-ABS-AR15-HVY

    Rating:
    94%
    (16)
    Regular Price $84.99 Special Price $75.99
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  21. CMMG AR-15 Lower Receiver Extension Kit

    CMMG AR-15 Receiver Extension Kit, Carbine - 55CA6C7

    Rating:
    100%
    (9)
    Regular Price $71.99 Special Price $63.99
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  22. CMMG AR-15 Carbine Action Buffer Spring

    CMMG AR-15 Carbine Action Buffer Spring - 55CA9A2

    Rating:
    92%
    (15)
    Regular Price $5.99 Special Price $5.39
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  23. Timney AR PCC Single Stage 2.5-3.0 lbs. Straight Bow Trigger - 681-ST

    Timney AR PCC Single Stage 2.5-3.0 lbs. Straight Bow Trigger - 681-ST

    Rating:
    100%
    (2)
    Regular Price $250.99 Special Price $225.99
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  24. Timney Triggers Calvin Elite Single Stage 1.5 lbs. Trigger w/ 4 Adjustable Shoes - 660CE

    Timney Triggers Calvin Elite Single Stage 1.5 lbs. Trigger w/ 4 Adjustable Shoes - 660CE

    Rating:
    93%
    (3)
    $329.99
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Items 673-696 of 1828

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  1. Buffer Tube Assembly Parts 493
  2. Enhanced Parts 397
  3. Lower Receiver Assembly Parts 896
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