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300 Blackout Uppers

Start your build off right with a 300 blackout upper from Palmetto State Armory. We offer AR-15 uppers in various barrel lengths and finishes to fit the needs of your build. We also carry 300 blackout kits, complete guns, and 300 blackout ammo. We have you covered with all things 300 blackout related. 

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Items 1-24 of 123

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  1. 300 blackout upper receiver kit

    PSA 16" Pistol-Length 300AAC Blackout 1/8 Nitride 15" Lightweight M-Lok Upper - With BCG & CH - 5165448932

    Rating:
    94%
    (238)
    Regular Price $599.99 Special Price $329.99
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  2. 10.5" m-lok slant upper with bcg, ch, and mbus sight set 300 blackout upper for sale

    PSA 10.5" Pistol-Length 300AAC 1/8 12" M-lok Slant Upper - With BCG, CH, And MBUS Sight Set - 5165447571

    Rating:
    95%
    (89)
    Regular Price $659.99 Special Price $399.99
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  3. ar-15 barreled upper

    PSA 10.5" Pistol-Length 300AAC 1/8 Phosphate 9" Lightweight M-Lok Upper - With BCG & CH - 5165448418

    Rating:
    91%
    (147)
    Regular Price $599.99 Special Price $319.99
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  4. barreled upper assemblies

    PSA 16" Pistol-Length 300AAC Blackout 1/8 Nitride 13.5" Lightweight M-Lok Upper - With BCG, CH, & MBUS Sight Set - 5165448559

    Rating:
    94%
    (75)
    Regular Price $729.99 Special Price $369.99
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  5. PSA 10.5" Pistol Length 300AAC 1/8 Nitride 10.5" M-Lok Upper - With BCG & CH - 5165449628

    PSA 10.5" Pistol Length 300AAC 1/8 Nitride 10.5" M-Lok Upper - With BCG & CH - 5165449628

    Rating:
    95%
    (75)
    Regular Price $559.99 Special Price $329.99
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  6. 8.5" shockwave AR 15 300 blackout pistol kit

    PSA 8.5" Pistol-length 300AAC Blackout 1/8 Phosphate 7" Lightweight M-Lok Classic Shockwave Pistol Kit

    Rating:
    95%
    (70)
    Regular Price $649.99 Special Price $419.99
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  7. barreled upper assembly

    PSA 16" Pistol-Length 300AAC Blackout 1/8 Nitride 13.5" Lightweight M-Lok Upper - No BCG or CH - 5165448216

    Rating:
    92%
    (65)
    Regular Price $479.99 Special Price $289.99
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  8. PSA 16" 300AAC Blackout Pistol-Length 1/8 Nitride 15" Lightweight M-Lok Freedom Rifle Kit w/MBUS Sight Set

    PSA 16" 300AAC Blackout Pistol-Length 1/8 Nitride 15" Lightweight M-Lok Freedom Rifle Kit w/MBUS Sight Set

    Rating:
    89%
    (56)
    Regular Price $779.99 Special Price $479.99
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  9. PSA 7.5" Pistol-length 300AAC 1/8 Phosphate 7" Lightweight M-Lok MFT Battlelink Pistol Kit

    PSA 7.5" Pistol-length 300AAC 1/8 Phosphate 7" Lightweight M-Lok MFT Battlelink Pistol Kit

    Rating:
    94%
    (43)
    Regular Price $719.99 Special Price $419.99
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  10. PSA 8.5" Pistol-length 300AAC Blackout 1/8 Phosphate 7" Lightweight M-Lok MOE EPT SBA3 Pistol Kit

    PSA 8.5" Pistol-length 300AAC Blackout 1/8 Phosphate 7" Lightweight M-Lok MOE EPT SBA3 Pistol Kit

    Rating:
    93%
    (21)
    Regular Price $849.99 Special Price $469.99
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  11. PSA 10.5" Pistol-Length 300AAC 1/8 Phosphate12" Slant M-lok Upper with BCG-CH

    PSA 10.5" Pistol-Length 300AAC 1/8 Phosphate12" Slant M-lok Upper with BCG-CH

    Rating:
    100%
    (5)
    Regular Price $649.99 Special Price $379.99
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  12. 7.5" MOE SBA3 AR 15 300 blackout pistol kit

    PSA 7.5" 300AAC Blackout 1/8 Phosphate 9" Lightweight M-Lok MOE EPT SBA3 Pistol Kit - 5165448841

    Rating:
    96%
    (66)
    Regular Price $799.99 Special Price $509.99
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  13. 7.5 inch ar-15 pistol barreled upper assembly

    PSA 7.5" Pistol-length 300AAC Blackout 1/7 Nitride 7" Lightweight M-Lok Upper With BCG & CH - 5165449727

    Rating:
    87%
    (38)
    Regular Price $539.99 Special Price $389.99
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  14. side view of barreled upper assembly for sale

    PSA 10.5" Pistol Length 300AAC Blackout 1:8 Nitride 9" Lightweight M-Lok Freedom Upper With BCG & CH

    Rating:
    96%
    (69)
    Regular Price $599.99 Special Price $399.99
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  15. Photo PSA 7" barreled upper receiver for 300 blackout.

    PSA 7.5" 300AAC Blackout 1/8 Phosphate 9" Lightweight M-Lok Upper With Fluted Flash Can, BCG, & CH - 5165447685

    Rating:
    95%
    (119)
    Regular Price $549.99 Special Price $349.99
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  16. PSA 10.5" Pistol Length 300AAC 1/8 Phosphate 10.5" Lightweight M-Lok MOE EPT SBA3 Pistol Kit

    PSA 10.5" Pistol Length 300AAC 1/8 Phosphate 10.5" Lightweight M-Lok MOE EPT SBA3 Pistol Kit

    Rating:
    90%
    (25)
    Regular Price $759.99 Special Price $499.99
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  17. PSA 10.5" Pistol-Length 300AAC Blackout 1/8 Nitride 9" M-Lok MOE EPT SBA3 Pistol Kit

    PSA 10.5" Pistol-Length 300AAC Blackout 1/8 Nitride 9" M-Lok MOE EPT SBA3 Pistol Kit

    Rating:
    92%
    (26)
    Regular Price $809.99 Special Price $629.99
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  18. PSA 10.5" Pistol-Length 300AAC 1/8 Phosphate 9" Lightweight M-Lok Upper - With BCG & CH

    PSA 10.5" Pistol-Length 300AAC 1/8 Phosphate 9" Lightweight M-Lok Upper - With BCG & CH

    Rating:
    84%
    (5)
    Regular Price $599.99 Special Price $329.99
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  19. 8.5" classic shockwave AR-15 300 blackout pistol kit

    PSA 8.5" Pistol-length 300AAC Blackout 1/8 Phosphate 6" Lightweight M-Lok Classic Shockwave Pistol Kit

    Rating:
    97%
    (45)
    Regular Price $629.99 Special Price $459.99
    Add to Wish List Add to Compare
  20. PSA 7.5" Pistol-Length 300AAC Blackout 1/7 Nitride 6" Lightweight M-Lok MOE EPT SBA3 Pistol Kit

    PSA 7.5" Pistol-Length 300AAC Blackout 1/7 Nitride 6" Lightweight M-Lok MOE EPT SBA3 Pistol Kit

    Rating:
    91%
    (28)
    Regular Price $799.99 Special Price $599.99
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  21. PSA 10.5" Pistol-Length 300AAC Blackout 1/8 Nitride 9" Lightweight M-Lok Upper - No BCG or CH

    PSA 10.5" Pistol-Length 300AAC Blackout 1/8 Nitride 9" Lightweight M-Lok Upper - No BCG or CH

    Rating:
    91%
    (40)
    Regular Price $419.99 Special Price $339.99
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  22. PSA 10.5" Pistol-Length 300AAC 1/8 12" Lightweight M-Lok Slant Upper - With BCG, CH, & MBUS Sight Set - 5165449836

    PSA 10.5" Pistol-Length 300AAC 1/8 12" Lightweight M-Lok Slant Upper - With BCG, CH, & MBUS Sight Set - 5165449836

    Rating:
    91%
    (78)
    Regular Price $679.99 Special Price $529.99
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  23. PSA 10.5" Pistol-Length 300AAC 1/8 12" M-lok Slant MOE EPT Shockwave Pistol Kit - 5165447589

    PSA 10.5" Pistol-Length 300AAC 1/8 12" M-lok Slant MOE EPT Shockwave Pistol Kit - 5165447589

    Rating:
    87%
    (12)
    Regular Price $749.99 Special Price $589.99
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  24. PSA 10.5" Pistol-Length 300AAC Blackout 1/8 Phosphate 12" Slant M-Lok MOE EPT SBA3 Pistol Kit - 5165448818

    PSA 10.5" Pistol-Length 300AAC Blackout 1/8 Phosphate 12" Slant M-Lok MOE EPT SBA3 Pistol Kit - 5165448818

    Rating:
    93%
    (60)
    Regular Price $839.99 Special Price $639.99
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Items 1-24 of 123

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  1. PSA AR-15 "Sheepdog-15" GOA Fundraiser Stripped Lower Receiver
    PSA AR-15 "Sheepdog-15" GOA Fundraiser Stripped Lower Receiver
    $59.99
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  2. Geissele SSA-E
    Geissele Super Semi-Automatic Enhanced (SSA-E) Trigger- 05-160
    Rating:
    97%
    (698)
    Regular Price $299.99 Special Price $240.99
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  3. Geissele Super Semi-Automatic Enhanced (SSA-E) Trigger & PSA AR-15 MOE Lower Build Kit- Without FCG
    Geissele Super Semi-Automatic Enhanced (SSA-E) Trigger & PSA AR-15 MOE Lower Build Kit- Without FCG
    $330.98
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  4. Fundraiser: PSA AR-15 "BRACE-15" Stripped Lower Receiver
    Fundraiser: PSA AR-15 "BRACE-15" Stripped Lower Receiver
    $59.99
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  5. Springfield XD Defenders Series 9mm 4" Pistol, Black - XDD9101HC
    Springfield XD Defenders Series 9mm 4" Pistol, Black - XDD9101HC
    Rating:
    94%
    (67)
    Regular Price $499.99 Special Price $299.99
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  6. Crimson Trace CTS-1000 2 MOA Compact Tactical Red Dot Sight
    Crimson Trace CTS-1000 2 MOA Compact Tactical Red Dot Sight - CTS-1000
    Rating:
    20%
    (1)
    Regular Price $404.99 Special Price $299.99
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  7. Timber Creek Outdoors Enforcer Mini Small Ambidextrous Charging Handle, Hardcoat Anodized Black, for AR-15 Rifle - EM Ambi CH BL
    Timber Creek Outdoors Enforcer Mini Small Ambidextrous Charging Handle, Hardcoat Anodized Black, for AR-15 Rifle - EM Ambi CH BL
    Rating:
    60%
    (1)
    Regular Price $95.99 Special Price $79.99
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  8. Citadel Boss Hog 20" Sem-Auto 12 Gauge Shotgun 3", Black
    Citadel Boss Hog 20" Semi-Auto 12 Gauge Shotgun 3", Black - KATAC1220
    Regular Price $449.99 Special Price $299.99
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  9. Standard MFG DP12 Double Barrel Pump Action 12 Gauge Shotgun, ODG - DP12ODG
    Standard MFG DP12 Double Barrel Pump Action 12 Gauge Shotgun, ODG - DP12ODG
    Rating:
    98%
    (8)
    Regular Price $1,799.99 Special Price $1,049.99
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  10. JX49221M Beretta Cx4 Storm 9mm Carbine
    Beretta Cx4 Storm 92 9mm PCC Rifle, Blk - JX49221M
    Rating:
    87%
    (3)
    Regular Price $999.99 Special Price $649.99
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  11. Butler Creek Featherlight Narrow Adjustable Sling With Swivels, Black
    Butler Creek Featherlight Narrow Adjustable Sling With Swivels, Black - 190038
    Rating:
    47%
    (3)
    Regular Price $39.99 Special Price $14.99
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  12. Sylvan 3 Piece QD Rail Mount Set - RC300
    Sylvan 3 Piece QD Rail Mount Set - RC300
    Regular Price $129.99 Special Price $94.99
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  13. Steiner CQT Close Quarter Thermal Optic - 300352-1
    Steiner CQT Close Quarter Thermal Optic - 300352-1
    Regular Price $9,999.99 Special Price $4,499.99
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  14. Century AP5-M 9mm Pistol 4.5" 30rd, Black
    Century AP5-M 9mm Pistol 4.5" 30rd, Black - HG6036A-N
    Regular Price $1,610.54 Special Price $1,192.99
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