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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. -32%
    PRO2A 22" 223 Wylde 1/7 Rifle Length Stainless Premium AR-15 Upper Kit
    Rating:
    100%
    2  Reviews
    Special Price $519.99 $759.99
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  2. -31%
    PRO2A 12.5" 300 Blackout 1/8 Pistol Length Melonite AR-15 Upper with Flash Can Kit
    Rating:
    90%
    1  Review
    Special Price $489.99 $709.99
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  3. -21%
    PRO2A 12.5" 300 Blackout 1/8 Pistol Length NR Side Charging Melonite AR-15 Upper Kit
    Rating:
    0%
    Special Price $789.99 $994.99
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  4. -35%
    PRO2A 22" 5.56 NATO 1/7 Rifle Length Melonite AR-15 Upper Kit
    Rating:
    100%
    1  Review
    Special Price $489.99 $749.99
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  5. -17%
    PRO2A 18" 6.5 Grendel 1/8 Mid Length Melonite M-LOK AR-15 Upper Kit
    Rating:
    73%
    1  Review
    Special Price $549.99 $659.99
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  6. -23%
    PRO2A 12.5" 6.5 Grendel 1/8 Carbine Length Melonite M-LOK AR-15 Upper Kit
    Rating:
    100%
    2  Reviews
    Special Price $509.99 $659.99
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  7. -37%
    PRO2A 11.5" 5.56 NATO 1/7 Carbine Length Melonite AR-15 Upper Kit
    Rating:
    100%
    2  Reviews
    Special Price $419.99 $669.99
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  8. -37%
    PRO2A 11.5" 5.56 NATO 1/7 Carbine Length Melonite AR-15 Upper with Flash Can Kit
    Rating:
    100%
    2  Reviews
    Special Price $449.99 $709.99
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  9. -21%
    PRO2A 11.5" 5.56 NATO 1/7 Carbine Length NR Side Charging Melonite M-LOK AR-15 Upper with Flash Can Kit
    Rating:
    90%
    2  Reviews
    Special Price $779.99 $989.99
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  10. -30%
    PRO2A 16" 300 Blackout 1/7 Pistol Length Melonite AR-15 Upper Kit
    Rating:
    100%
    1  Review
    Special Price $449.99 $639.99
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  11. -16%
    PRO2A 20" 6.5 Grendel 1/8 Rifle Length Melonite M-LOK AR-15 Upper Kit
    Rating:
    80%
    1  Review
    Special Price $559.99 $669.99
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  12. -38%
    PRO2A 18" 7.62x39 1/10 Carbine Length Melonite M-LOK AR-15 Upper Kit
    Rating:
    100%
    1  Review
    Special Price $469.99 $759.99
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  13. -26%
    PRO2A 20" 224 Valkyrie 1/6.5 Rifle Length Melonite M-LOK AR-15 Upper Kit
    Rating:
    100%
    1  Review
    Special Price $559.99 $759.99
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  14. -37%
    PRO2A 20" 223 Wylde 1/7 Rifle Length Stainless Premium AR-15 Upper Kit
    Rating:
    87%
    1  Review
    Special Price $509.99 $809.99
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  15. -24%
    PRO2A 16" 300 Blackout 1/7 Pistol Length NR Side Charging Melonite AR-15 Upper with Flash Can Kit
    Rating:
    100%
    1  Review
    Special Price $819.99 $1,074.99
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  16. -38%
    PRO2A 10.5" 7.62x39 1/10 Carbine Length Melonite AR-15 Upper Kit
    Rating:
    87%
    1  Review
    Special Price $439.99 $709.99
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  17. -37%
    PRO2A 10.5" 7.62x39 1/10 Carbine Length Melonite AR-15 Upper with Flash Can Kit
    Rating:
    100%
    1  Review
    Special Price $469.99 $749.99
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  18. -21%
    PRO2A 16" 5.56 NATO 1/7 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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  19. -34%
    PRO2A 7.5" 223/5.56 1/7 Pistol Length Melonite AR-15 Upper Kit
    Rating:
    92%
    2  Reviews
    Special Price $409.99 $619.99
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  20. -33%
    PRO2A 7.5" 223/5.56 1/7 Pistol Length Melonite AR-15 Upper with Flash Can Kit
    Rating:
    100%
    1  Review
    Special Price $439.99 $659.99
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  21. -36%
    PRO2A 10.5" 5.56 NATO 1/7 Carbine Length Melonite AR-15 Upper Kit
    Rating:
    100%
    2  Reviews
    Special Price $419.99 $659.99
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    Add to Compare
  22. -36%
    PRO2A 10.5" 5.56 NATO 1/7 Carbine Length Melonite AR-15 Upper with Flash Can Kit
    Rating:
    100%
    1  Review
    Special Price $449.99 $699.99
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  23. -30%
    PRO2A 7.5" 300 Blackout 1/7 or 1/5 Pistol Length Melonite AR-15 Upper Kit
    Rating:
    100%
    2  Reviews
    Special Price $419.99 $599.99
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  24. -30%
    PRO2A 7.5" 300 Blackout 1/7 or 1/5 Pistol Length Melonite AR-15 Upper with Flash Can Kit
    Rating:
    93%
    1  Review
    Special Price $449.99 $639.99
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  25. -31%
    PRO2A 8.5" 300 Blackout 1/7 Pistol Length Melonite AR-15 Upper Kit
    Rating:
    0%
    Special Price $429.99 $619.99
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  26. -30%
    PRO2A 8.5" 300 Blackout 1/7 Pistol Length Melonite AR-15 Upper with Flash Can Kit
    Rating:
    87%
    1  Review
    Special Price $459.99 $659.99
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    Add to Compare
  27. -28%
    PRO2A 6" 300 Blackout 1/7 Pistol Length Melonite AR-15 Upper with Flash Can Kit
    Rating:
    100%
    1  Review
    Special Price $479.99 $669.99
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  28. -32%
    PRO2A 12.5" 300 Blackout 1/8 Pistol Length Melonite AR-15 Upper Kit
    Rating:
    0%
    Special Price $459.99 $679.99
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  29. -35%
    PRO2A 7.5" 7.62x39 1/10 Pistol Length Melonite AR-15 Upper Kit
    Rating:
    80%
    2  Reviews
    Special Price $429.99 $659.99
    Add to Wish List
    Add to Compare
  30. -39%
    PRO2A 7.5" 7.62x39 1/10 Pistol Length Melonite AR-15 Upper with Flash Can Kit
    Rating:
    80%
    1  Review
    Special Price $459.99 $759.99
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    Add to Compare
  31. -26%
    PRO2A 10.5" 9x39 Russian 1/7 Pistol Length Melonite M-LOK AR-15 Upper Kit
    Rating:
    0%
    Special Price $539.99 $729.99
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  32. -25%
    PRO2A 10.5" 9x39 Russian 1/7 Pistol Length Melonite M-LOK AR-15 Upper with Flash Can Kit
    Rating:
    0%
    Special Price $569.99 $759.99
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  33. -21%
    PRO2A 8.5" 458 Socom 1/14 Pistol Length Melonite M-LOK AR-15 Upper Kit
    Rating:
    100%
    1  Review
    Special Price $579.99 $729.99
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  34. -21%
    PRO2A 8.5" 458 Socom 1/14 Pistol Length Melonite M-LOK AR-15 Upper with Flash Can Kit
    Rating:
    100%
    1  Review
    Special Price $609.99 $769.99
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  35. -21%
    PRO2A 22" 5.56 NATO 1/7 Rifle Length NR Side Charging Melonite M-LOK AR-15 Upper Kit
    Rating:
    100%
    1  Review
    Special Price $849.99 $1,069.99
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  36. -32%
    PRO2A 18" 223 Wylde 1/7 Mid Length Stainless Premium AR-15 Upper Kit
    Rating:
    100%
    1  Review
    Special Price $499.99 $729.99
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213 items

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