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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 73-96 of 1828

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  1. Brownells BRN-16 Trigger Guard Roll Pin, Black

    Brownells BRN-16 Trigger Guard Roll Pin, Black

    Regular Price $0.99 Special Price $0.79
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  2. Brownells Trigger Guard Assembly, Black

    Brownells Trigger Guard Assembly, Black

    Rating:
    100%
    (2)
    Regular Price $9.99 Special Price $8.19
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  3. Brownells Buffer Retainer, Black

    Brownells Buffer Retainer, Black

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

    Brownells Buffer Retainer Spring

    Regular Price $2.99 Special Price $2.49
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  5. Brownells 601 Front Pivot Pin Assembly, Dark Gray

    Brownells 601 Front Pivot Pin Assembly, Dark Gray

    Rating:
    100%
    (2)
    Regular Price $14.99 Special Price $13.19
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  6. Brownells Rifle Receiver Extension and Buffer Kit, Black

    Brownells Rifle Receiver Extension and Buffer Kit, Black

    Regular Price $94.99 Special Price $84.99
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  7. Brownells Buttstock Screw, Black

    Brownells Buttstock Screw, Black

    Regular Price $10.99 Special Price $9.99
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  8. Brownells Rifle Receiver Extension Tube, Black

    Brownells Rifle Receiver Extension Tube, Black

    Regular Price $54.99 Special Price $48.89
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  9. Brownells Carbine Buffer, Silver

    Brownells Carbine Buffer, Silver

    Regular Price $59.99 Special Price $53.49
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  10. Brownells H2 Carbine Buffer, Gray

    Brownells H2 Carbine Buffer, Gray

    Rating:
    100%
    (5)
    $59.99
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  11. Brownells H1 Carbine Buffer, Gray

    Brownells H1 Carbine Buffer, Gray

    Regular Price $37.99 Special Price $33.79
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  12. Brownells Carbine Buffer, Silver

    Brownells Carbine Buffer, Silver

    Rating:
    100%
    (3)
    Regular Price $17.99 Special Price $15.99
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  13. Brownells 3-Pack M4 Buffer Spring

    Brownells 3-Pack M4 Buffer Spring

    Regular Price $14.99 Special Price $13.19
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  14. Brownells 3-Pack Detent Takedown Spring

    Brownells 3-Pack Detent Takedown Spring

    Rating:
    100%
    (1)
    Regular Price $9.99 Special Price $8.19
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  15. Brownells 3-Pack Disconnector Spring, Silver

    Brownells 3-Pack Disconnector Spring, Silver

    Regular Price $6.99 Special Price $5.69
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  16. Brownells 3-Pack A2 Charging Handle Latch Spring, Silver

    Brownells 3-Pack A2 Charging Handle Latch Spring, Silver

    Regular Price $6.99 Special Price $5.69
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  17. Brownells 3-Pack A2 Buffer Spring

    Brownells 3-Pack A2 Buffer Spring

    Regular Price $20.99 Special Price $18.79
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  18. Brownells 3-Pack Buffer Retainer Spring

    Brownells 3-Pack Buffer Retainer Spring

    Regular Price $5.99 Special Price $4.89
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  19. Rock River Arms RRA 2-Stage Match Trigger Kit, Black

    Rock River Arms RRA 2-Stage Match Trigger Kit, Black

    Rating:
    100%
    (1)
    $94.99
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  20. Ergo M4 Receiver Castle Nut, Black

    Ergo M4 Receiver Castle Nut, Black

    Rating:
    100%
    (1)
    Regular Price $7.99 Special Price $6.99
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  21. JP Enterprises Silent Captured Spring Buffer Retaining Pin and Spring, Black/Silver

    JP Enterprises Silent Captured Spring Buffer Retaining Pin and Spring, Black/Silver

    Rating:
    100%
    (1)
    $12.99
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  22. JP Enterprises Heavy H2 Law Tactical Folder Silent Captured Spring Package

    JP Enterprises Heavy H2 Law Tactical Folder Silent Captured Spring Package

    $264.99
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  23. JP Enterprises H2 Buffer Gen 2 Silent Captured Spring Builder w/Alternative Spring Pack

    JP Enterprises H2 Buffer Gen 2 Silent Captured Spring Builder w/Alternative Spring Pack

    Regular Price $231.99 Special Price $208.99
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  24. JP Enterprises H2 Buffer Gen 2 Silent Captured Spring

    JP Enterprises H2 Buffer Gen 2 Silent Captured Spring

    Regular Price $209.99 Special Price $188.99
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Items 73-96 of 1828

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  1. Buffer Tube Assembly Parts 492
  2. Enhanced Parts 397
  3. Lower Receiver Assembly Parts 896
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