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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 49-72 of 1828

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  1. Tactical Springs LLC Extra Power Carbine Buffer Spring

    Tactical Springs LLC Extra Power Carbine Buffer Spring

    Rating:
    100%
    (1)
    $21.99
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  2. Tactical Springs LLC Extra Power Spring Kit

    Tactical Springs LLC Extra Power Spring Kit

    Regular Price $29.99 Special Price $26.99
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  3. Tactical Springs LLC Super Duty Carbine Spring Reliability Kit

    Tactical Springs LLC Super Duty Carbine Spring Reliability Kit

    $23.99
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  4. KNS Precision Inc M16/M4 Non Rotating Sear Pin, Black

    KNS Precision Inc M16/M4 Non Rotating Sear Pin, Black

    Regular Price $46.99 Special Price $42.19
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  5. Brownells A2 Stock Spacer, Black

    Brownells A2 Stock Spacer, Black

    Regular Price $5.99 Special Price $4.89
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  6. Brownells 2-Position Mil-Spec Buffer Tube, Gray

    Brownells 2-Position Mil-Spec Buffer Tube, Gray

    Rating:
    40%
    (1)
    Regular Price $30.99 Special Price $27.69
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  7. Brownells Pistol Buffer Tube Assembly, Black

    Brownells Pistol Buffer Tube Assembly, Black

    Regular Price $59.99 Special Price $53.19
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  8. Brownells Pistol Buffer Tube, Black

    Brownells Pistol Buffer Tube, Black

    Regular Price $39.99 Special Price $35.69
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  9. Brownells M4 Mil-Spec Buffer Tube Assembly, Black

    Brownells M4 Mil-Spec Buffer Tube Assembly, Black

    Rating:
    100%
    (1)
    Regular Price $64.99 Special Price $58.49
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  10. Brownells Oversized Magazine Release Button, Black

    Brownells Oversized Magazine Release Button, Black

    Regular Price $23.99 Special Price $20.99
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  11. Brownells Receiver End Plate, Black

    Brownells Receiver End Plate, Black

    Regular Price $8.99 Special Price $7.29
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  12. Brownells Large Hammer/Trigger Pin Set

    Brownells Large Hammer/Trigger Pin Set

    Regular Price $16.99 Special Price $14.69
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  13. Brownells Small Hammer/Trigger Pin Set

    Brownells Small Hammer/Trigger Pin Set

    Regular Price $15.99 Special Price $14.09
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  14. Brownells Mil-Spec Bolt Catch, Gray

    Brownells Mil-Spec Bolt Catch, Gray

    Regular Price $9.99 Special Price $8.99
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  15. Brownells Mil-Spec Trigger Guard Assembly, Black

    Brownells Mil-Spec Trigger Guard Assembly, Black

    Regular Price $7.99 Special Price $6.49
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  16. Brownells Trigger Guard Roll Pin, Black

    Brownells Trigger Guard Roll Pin, Black

    Rating:
    100%
    (1)
    Regular Price $3.99 Special Price $3.29
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  17. Brownells M4 Buffer Spring

    Brownells M4 Buffer Spring

    Regular Price $7.99 Special Price $6.49
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  18. Brownells Disconnector Spring

    Brownells Disconnector Spring

    Regular Price $3.99 Special Price $3.29
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  19. Brownells Detent Takedown Spring

    Brownells Detent Takedown Spring

    Regular Price $3.99 Special Price $3.29
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  20. Brownells A2 Charging Handle Latch Spring

    Brownells A2 Charging Handle Latch Spring

    Regular Price $3.99 Special Price $3.29
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  21. Brownells Buffer Retainer Spring

    Brownells Buffer Retainer Spring

    Regular Price $4.99 Special Price $4.09
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  22. Brownells A2 Buffer Spring

    Brownells A2 Buffer Spring

    Rating:
    40%
    (1)
    Regular Price $9.99 Special Price $8.19
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  23. Brownells Bolt Catch Spring, Silver

    Brownells Bolt Catch Spring, Silver

    Regular Price $1.99 Special Price $0.99
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  24. Brownells 6-Position Mil-Spec Buffer Tube, Black

    Brownells 6-Position Mil-Spec Buffer Tube, Black

    Rating:
    73%
    (3)
    Regular Price $30.99 Special Price $27.79
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Items 49-72 of 1828

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  1. Buffer Tube Assembly Parts 493
  2. Enhanced Parts 402
  3. Lower Receiver Assembly Parts 896
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