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UPPER KITS

Premium Custom Builds. Direct-to-Consumer Value.
Welcome to the ultimate destination for modular firearm performance. Pro2A Tactical's AR-15 Complete Upper, Rifle, and Pistol collection is engineered for shooters who demand custom-shop quality, tight manufacturing tolerances, and field-proven reliability without the steep distributor markup.
We build every platform right here in Georgia using high-grade components, precise headspacing, and strict quality control. From ultra-compact home-defense pistols to flat-shooting precision distance rifles, we configure the exact setup you need to dominate the range, the field, or the competition clock.
Why the Industry Chooses Pro2A Tactical:
  • The Destination for Left-Handed Shooters: We don’t just throw an ambidextrous safety on a standard rifle and call it a day. As a lefty-owned business, we lead the industry with true mirrored, left-ejecting upper receivers and left-handed M16 profile bolt carrier groups across nearly every caliber we build.
  • Over 15 Calibers on a Single Footprint: Customize your platform for any mission. Explore standard 5.56 NATO and .300 Blackout tactical setups, high-velocity .22 ARC, 224 Valkyrie, 350 Legend, 400 legend, 6mm ARC, and 6.5 Grendel distance lines, or devastating big-bore options like .458 SOCOM and .50 Beowulf.
  • Side-Charging & High-Speed Performance: Beyond standard rear-charging layouts, we manufacture specialized non-reciprocating side-charging uppers for fast manual cycling under large optics, alongside high-speed reset capabilities built for performance triggers.
  • Ready Out of the Box: Skip the headache of piecemeal tuning. Our complete uppers drop directly onto any mil-spec lower receiver, and our complete firearms are shipped fully assembled and range-tested.
 

Choose of a huge selection of Complete Upper Kits which includes the upper assembly, bolt carrier group and charging handle, lower parts kit and stock/blade kit - everything you need to complete a stripped lower receiver. Variety of Calibers, awesome savings - SHOP now and save!

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213 items

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  1. -14%
    PRO2A 16" 6mm ARC 1/7.5 Mid Length NR Side Charging Melonite M-LOK AR-15 Upper Kit
    Rating:
    0%
    Special Price $869.99 $1,009.99
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  2. -17%
    PRO2A 18" 223 Wylde 1/7 Mid Length NR Side Charging Stainless Premium M-LOK AR-15 Upper Kit
    Rating:
    100%
    1  Review
    Special Price $869.99 $1,049.99
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  3. -40%
    PRO2A 16" 223 Wylde 1/7 Mid Length Stainless Premium AR-15 Upper Kit
    Rating:
    95%
    3  Reviews
    Special Price $479.99 $799.99
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  4. -39%
    PRO2A 16" 5.56 NATO 1/7 Melonite M-LOK AR-15 Upper with Flash Can Kit
    Rating:
    87%
    1  Review
    Special Price $459.99 $759.99
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  5. -17%
    PRO2A 16" 223 Wylde 1/7 Mid Length NR Side Charging Stainless Premium M-LOK AR-15 Upper Kit
    Rating:
    87%
    1  Review
    Special Price $899.99 $1,079.99
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  6. -22%
    PRO2A 5" 300 Blackout 1/5 Micro Length NR Side Charging Melonite AR-15 Upper with Flash Can Kit
    Rating:
    93%
    1  Review
    Special Price $779.99 $1,004.99
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  7. -26%
    PRO2A 12.5" 9x39 Russian 1/7 Pistol Length Melonite M-LOK AR-15 Upper Kit
    Rating:
    0%
    Special Price $549.99 $739.99
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  8. -26%
    PRO2A 12.5" 9x39 Russian 1/7 Pistol Length Melonite M-LOK AR-15 Upper with Flash Can Kit
    Rating:
    87%
    1  Review
    Special Price $579.99 $779.99
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  9. -9%
    PRO2A 10.5" 9x39 Russian 1/7 Pistol Length NR Side Charging Melonite M-LOK AR-15 Upper with Flash Can Kit
    Rating:
    0%
    Special Price $879.99 $969.99
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  10. -21%
    PRO2A 20" 6.8 SPC II 1/11 Rifle Length Melonite M-LOK AR-15 Upper Kit
    Rating:
    93%
    1  Review
    Special Price $559.99 $709.99
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  11. -21%
    PRO2A 10.5" 450 Bushmaster 1/24 Carbine Length Melonite M-LOK AR-15 Upper with Flash Can Kit
    Rating:
    93%
    1  Review
    Special Price $619.99 $779.99
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  12. -32%
    PRO2A 12.5" 350 Legend 1/16 Pistol Length Melonite M-LOK AR-15 Upper Kit
    Rating:
    100%
    3  Reviews
    Special Price $469.99 $689.99
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  13. -31%
    PRO2A 12.5" 350 Legend 1/16 Pistol Length Melonite M-LOK AR-15 Upper with Flash Can Kit
    Rating:
    100%
    1  Review
    Special Price $499.99 $719.99
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  14. -24%
    PRO2A 12.5" 350 Legend 1/16 Pistol Length NR Side Charging Melonite M-LOK AR-15 Upper Kit
    Rating:
    100%
    1  Review
    Special Price $789.99 $1,039.99
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  15. -26%
    PRO2A 12.5" 350 Legend 1/16 Pistol Length NR Side Charging Melonite M-LOK AR-15 Upper with Flash Can Kit
    Rating:
    93%
    1  Review
    Special Price $819.99 $1,109.99
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  16. -20%
    PRO2A 10.5" 12.7x42 (50 Beowulf) 1/20 Carbine Length Melonite M-LOK AR-15 Upper Kit
    Rating:
    100%
    1  Review
    Special Price $589.99 $739.99
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  17. -35%
    PRO2A 16" 6mm ARC 1/7.5 Mid Length Melonite M-LOK AR-15 Upper Kit
    Rating:
    100%
    1  Review
    Special Price $529.99 $809.99
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  18. -6%
    PRO2A 10.5" 12.7x42 (50 Beowulf) 1/20 Carbine Length Melonite NR Side Charging M-LOK AR-15 Upper Kit
    Rating:
    100%
    1  Review
    Special Price $929.99 $989.99
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  19. -25%
    PRO2A 16" 12.7x42 (50 Beowulf) 1/20 Carbine Length Melonite M-LOK AR-15 Upper Kit
    Rating:
    0%
    Special Price $589.99 $789.99
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    Add to Compare
  20. -7%
    PRO2A 16" 12.7x42 (50 Beowulf) 1/20 Carbine Length Melonite NR Side Charging M-LOK AR-15 Upper Kit
    Rating:
    80%
    1  Review
    Special Price $929.99 $999.00
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  21. -1%
    PRO2A 18" 450 Bushmaster 1/24 Mid Length NR Side Charging Melonite M-LOK AR-15 Upper Kit
    Rating:
    0%
    Special Price $959.99 $969.99
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  22. -22%
    PRO2A 7.5" 450 Bushmaster 1/24 Pistol Length Melonite M-LOK AR-15 Upper Kit
    Rating:
    93%
    1  Review
    Special Price $569.99 $729.99
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  23. -2%
    PRO2A 7.5" 450 Bushmaster 1/24 Pistol Length NR Side Charging Melonite M-LOK AR-15 Upper Kit
    Rating:
    0%
    Special Price $899.99 $919.99
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  24. -38%
    PRO2A 16" 350 Legend 1/16 Carbine Length Melonite M-LOK AR-15 Upper Kit
    Rating:
    100%
    1  Review
    Special Price $479.99 $769.99
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    Add to Compare
  25. -21%
    PRO2A 16" 350 Legend 1/16 Carbine Length NR Side Charging Melonite M-LOK AR-15 Upper Kit
    Rating:
    93%
    1  Review
    Special Price $809.99 $1,029.99
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    Add to Compare
  26. -37%
    PRO2A 20" 5.56 NATO 1/7 Rifle Length Melonite AR-15 Upper Kit
    Rating:
    93%
    1  Review
    Special Price $469.99 $749.99
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  27. -22%
    PRO2A 20" 5.56 NATO 1/7 Rifle Length NR Side Charging Melonite M-LOK AR-15 Upper Kit
    Rating:
    0%
    Special Price $829.99 $1,059.99
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  28. -35%
    PRO2A 22" 223 Wylde 1/7 Rifle Length Melonite Fluted Heavy Bull Barrel AR-15 Upper Kit
    Rating:
    87%
    1  Review
    Special Price $529.99 $809.99
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  29. -25%
    PRO2A 5" 7.62x39 1/10 Micro Length Melonite AR-15 Upper with Flash Can Kit
    Rating:
    0%
    Special Price $469.99 $629.99
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  30. -38%
    PRO2A 20" 350 Legend 1/16 Carbine Length Melonite M-LOK AR-15 Upper Kit
    Rating:
    100%
    1  Review
    Special Price $509.99 $819.99
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    Add to Compare
  31. -28%
    PRO2A 20" 350 Legend 1/16 Carbine Length NR Side Charging Melonite M-LOK AR-15 Upper Kit
    Rating:
    0%
    Special Price $849.99 $1,179.99
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    Add to Compare
  32. PRO2A 16" 450 Bushmaster 1/24 Carbine Length NR Side Charging Melonite M-LOK AR-15 Upper Kit
    Rating:
    87%
    1  Review
    $929.99
    Add to Wish List
    Add to Compare
  33. -24%
    PRO2A 7.5" 350 Legend 1/16 Pistol Length Melonite M-LOK AR-15 Upper Kit
    Rating:
    100%
    1  Review
    Special Price $449.99 $589.99
    Add to Wish List
    Add to Compare
  34. -26%
    PRO2A 7.5" 350 Legend 1/16 Pistol Length Melonite M-LOK AR-15 Upper with Flash Can Kit
    Rating:
    87%
    1  Review
    Special Price $479.99 $649.99
    Add to Wish List
    Add to Compare
  35. -28%
    PRO2A 7.5" 350 Legend 1/16 Pistol Length NR Side Charging Melonite M-LOK AR-15 Upper with Flash Can Kit
    Rating:
    100%
    1  Review
    Special Price $779.99 $1,079.99
    Add to Wish List
    Add to Compare
  36. -18%
    PRO2A 7.5" 7.62x39 1/10 Pistol Length NR Side Charging Melonite AR-15 Upper with Flash Can Kit
    Rating:
    0%
    Special Price $799.99 $979.99
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213 items

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