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AR-15 Lower Build Kits & Parts Kits

Shop AR-15 lower build kits with the components needed to complete or upgrade your lower receiver. Choose from kits featuring stocks, triggers, pistol grips, buffer assemblies, lower parts, and other compatible components. Browse AR-15 lower build kits in multiple configurations to find the right setup for your next custom build. Explore PSA's extensive line of AR-15 Lowers. 

AR-15 Kits

AR-15 Kits
Lowers

Lowers
Lower Build Kits

Lower Build Kits
Lower Parts Kits

Lower Parts Kits
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Items 1-24 of 372

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  1. PSA MOE Lower Build Kit & Vortex Strike Fire II Red Dot Sight

    PSA MOE Lower Build Kit & Vortex Strike Fire II Red Dot Sight

    $189.98
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  2. PSA Magpul MOE Lower Build Kit & 10 Magpul PMAG Gen 2 MOE 5.56x45 30rd Magazines

    PSA Magpul MOE Lower Build Kit & 10 Magpul PMAG Gen 2 MOE 5.56x45 30rd Magazines

    SAVE $23.00 When you add both!
    Regular Price $222.99 Special Price $199.99
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  3. PSA B5 Systems EPT Lower Build Kit with SOPMOD Enhanced Stock, ODG

    PSA B5 Systems EPT Lower Build Kit with SOPMOD Enhanced Stock, ODG

    Rating:
    100%
    (26)
    $159.99
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  4. Palmetto State Armory Magpul AR-15 Lower Build Kit in Black

    Palmetto State Armory Magpul MOE Lower Build Kit, Black

    Rating:
    96%
    (2833)
    Regular Price $119.99 Special Price $99.99
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  5. psa sba4 moe ept pistol lower build kit black

    PSA SBA3 MOE EPT Pistol Lower Build Kit, Black

    Rating:
    95%
    (348)
    $159.99
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  6. PSA Guardsman-15 MOE HAR-15 Pistol Lower Build Kit, FDE

    PSA Guardsman-15 MOE HAR-15 Pistol Lower Build Kit, FDE

    Rating:
    80%
    (2)
    $139.99
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  7. PSA Guardsman-15 MOE HAR-15 Pistol Lower Build Kit, Black

    PSA Guardsman-15 MOE HAR-15 Pistol Lower Build Kit, Black

    Rating:
    95%
    (4)
    $139.99
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  8. PSA Guardsman-15 MOE PR Lower Build Kit, FDE

    PSA Guardsman-15 MOE PR Lower Build Kit, FDE

    Rating:
    100%
    (3)
    $149.99
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  9. PSA Guardsman-15 MOE PR Lower Build Kit, Black

    PSA Guardsman-15 MOE PR Lower Build Kit, Black

    Rating:
    88%
    (5)
    $149.99
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  10. Lantac M-SPEC LPK. AR15 Lower Parts Kit

    Lantac M-SPEC LPK. AR15 Lower Parts Kit

    Regular Price $49.99 Special Price $44.99
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  11. DPMS CAR-15 Lower Build Kit - ODG

    DPMS CAR-15 Lower Build Kit - ODG

    Rating:
    100%
    (1)
    $99.99
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  12. Brownells Lower Parts Kit Fits Glock G17/Glock G19

    Brownells Lower Parts Kit Fits Glock G17/Glock G19

    Rating:
    80%
    (2)
    Regular Price $42.99 Special Price $38.99
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  13. ALG Defense Inc Complete Mil-Spec Lower Parts Kit w/ACT Trigger

    ALG Defense Inc Complete Mil-Spec Lower Parts Kit w/ACT Trigger

    Regular Price $126.99 Special Price $114.99
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  14. ALG Defense Inc Complete Mil-Spec Lower Parts Kit w/QMS Trigger and Grip

    ALG Defense Inc Complete Mil-Spec Lower Parts Kit w/QMS Trigger and Grip

    Regular Price $107.99 Special Price $97.99
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  15. ALG Defense Inc Complete Mil-Spec Lower Parts Kit w/QMS Trigger

    ALG Defense Inc Complete Mil-Spec Lower Parts Kit w/QMS Trigger

    Regular Price $104.99 Special Price $94.99
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  16. Geissele Standard Lower Parts Kit w/Grip, Black

    Geissele Standard Lower Parts Kit w/Grip, Black

    Rating:
    100%
    (2)
    Regular Price $76.99 Special Price $68.99
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  17. Geissele Standard Lower Parts Kit, Black

    Geissele Standard Lower Parts Kit, Black

    Rating:
    100%
    (1)
    Regular Price $69.99 Special Price $62.99
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  18. PSA Rifle JAKL Lower Build Kit MOE SL EPT F5 Stock, Black

    PSA Rifle JAKL Lower Build Kit MOE SL EPT F5 Stock, Black

    Rating:
    85%
    (8)
    $259.99
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  19. PSA Rifle JAKL Lower Build Kit MOE SL EPT F5 Stock, FDE

    PSA Rifle JAKL Lower Build Kit MOE SL EPT F5 Stock, FDE

    Rating:
    100%
    (7)
    $259.99
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  20. KAK Industry Lower Parts Kit

    KAK Industry Lower Parts Kit

    Rating:
    98%
    (25)
    Regular Price $11.99 Special Price $9.99
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  21. KAK Industry Basic Build Kit

    KAK Industry Basic Build Kit

    Rating:
    76%
    (16)
    Regular Price $28.99 Special Price $25.99
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  22. KAK Industry Lower Parts Kit Fits AR-15 Lower Receivers

    KAK Industry Lower Parts Kit Fits AR-15 Lower Receivers

    Rating:
    24%
    (10)
    Regular Price $57.99 Special Price $51.99
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  23. Xtech Tactical Lower Parts Kit, Black

    Xtech Tactical Lower Parts Kit, Black

    Rating:
    60%
    (1)
    Regular Price $76.99 Special Price $68.99
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  24. PSA JAKL-10 EPT MIAD B&T Lower Build kit, Black

    PSA JAKL-10 EPT MIAD B&T Lower Build kit, Black

    Rating:
    73%
    (3)
    $299.99
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  1. Lower Build Kits 179
  2. Lower Parts Kits 193
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