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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. Variety of Calibers, awesome savings - SHOP now and save!

Upper Kits

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Items 1-36 of 204

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  1. 16 inch 6mm ARC AR-15 Upper Kit | NR Side Charging
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    PRO2A 16" 6mm ARC 1/7.5 Mid Length NR Side Charging Melonite M-LOK AR-15 Upper Kit
    Special Price $819.99 $1,009.99
  2. 8 inch AR-15 AR-V MP5 Style 9mm Pistol Caliber Melonite Upper Complete Kit | Fast Shipping | US MADE
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    PRO2A 8" 9mm 1/10 Pistol Caliber Melonite Upper Kit - MP5 Style
    Special Price $589.99 $819.99
  3. 16 inch 223 Wylde AR Upper Kit | Stainless Precision
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    PRO2A 16" 223 Wylde 1/7 Mid Length Stainless Premium AR-15 Upper Kit
    Rating:
    95%
    3  Reviews
    Special Price $519.99 $799.99
  4. 16 inch 5.56 NATO AR-15 Upper Kit | Extended Rail w/Can
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    PRO2A 16" 5.56 NATO 1/7 Mid Length Melonite M-LOK AR-15 Upper with Flash Can Kit
    Special Price $489.99 $799.99
  5. 16 inch 223 Wylde AR-15 Upper Kit |NR Side Charging
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    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 $839.99 $979.99
  6. 10.5 inch 45 ACP Upper Kit | Pro2a Tactical
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    PRO2A 10.5" 45 ACP 1/16 Pistol Caliber Melonite M-LOK Upper with Flash Can Kit
    Rating:
    93%
    1  Review
    Special Price $579.99 $779.99
  7. 12.5 inch 9x39 Russian AR Upper Kit | Pro2A Tactical
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    PRO2A 12.5" 9x39 Russian 1/7 Pistol Length Melonite M-LOK AR-15 Upper Kit
    Special Price $599.99 $799.99
  8. 12.5 inch 9x39 Russian AR Upper Kit | Pro2a Tactical
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    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 $629.99 $839.99
  9. 10.5 inch 9x39 Side Charging Upper Kit | Pro2A Tactical
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    PRO2A 10.5" 9x39 Russian 1/7 Pistol Length NR Side Charging Melonite M-LOK AR-15 Upper with Flash Can Kit
    Special Price $809.99 $1,029.99
  10. 8.5 inch 9x39 Russian AR-15 NR Side Charging Upper Kit | Pro2A Tactical
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    PRO2A 8.5" 9x39 Russian 1/7 Pistol Length NR Side Charging Melonite M-LOK AR-15 Upper with Flash Can Kit
    Rating:
    100%
    1  Review
    Special Price $799.99 $999.99
  11. 20 inch 6.8 SPC II AR-15 Upper Kit | 100% US MADE
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    PRO2A 20" 6.8 SPC II 1/11 Rifle Length Melonite M-LOK AR-15 Upper Kit
    Rating:
    93%
    1  Review
    Special Price $609.99 $779.99
  12. 16 inch AR-15 223 Wylde Upper Kit | Unthreaded
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    PRO2A 16" 223 Wylde 1/8 Carbine Length NR Side Charging Melonite M-LOK AR-15 Upper Kit - Unthreaded
    Rating:
    93%
    1  Review
    Special Price $759.99 $959.99
  13. 12.5 inch 350 Legend AR Upper Kit | Pro2A Tactical
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    PRO2A 12.5" 350 Legend 1/16 Pistol Length Melonite M-LOK AR-15 Upper Kit
    Rating:
    100%
    2  Reviews
    Special Price $519.99 $739.99
  14. 12.5 inch 350 Legend AR Upper Kit | Pro2A Tactical
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    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 $549.99 $769.99
  15. 12.5 inch 350 Legend Side Charging Upper Kit | Pro2A Tactical
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    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 $729.99 $989.99
  16. 10.5 inch 12.7x42 (50 Beowulf) Upper Kit | Pro2a Tactical
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    PRO2A 10.5" 12.7x42 (50 Beowulf) 1/20 Pistol Length M-LOK AR-15 Upper Kit
    Special Price $549.99 $699.99
  17. 16 inch 6mm ARC AR Upper Kit | Pro2A Tactical
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    PRO2A 16" 6mm ARC 1/7.5 Mid Length Melonite M-LOK AR-15 Upper Kit
    Rating:
    100%
    1  Review
    Special Price $579.99 $809.99
  18. 10.5 inch 12.7x42 (50 Beowulf) Side Charging Upper Kit | Pro2a Tactical
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    PRO2A 10.5" 12.7x42 (50 Beowulf) 1/20 Pistol Length NR Side Charging M-LOK AR-15 Upper Kit
    Special Price $789.99 $959.99
  19. 16 inch AR-15 12.7x42 (50 Beowulf) Upper Kit | Pro2A Tactical
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    PRO2A 16" 12.7x42 (50 Beowulf) 1/20 Carbine Length M-LOK AR-15 Upper Kit
    Special Price $569.99 $769.99
  20. 16 inch 12.7x42 (50 Beowulf) Upper Kit | NR Side Charging
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    PRO2A 16" 12.7x42 (50 Beowulf) 1/20 Carbine Length NR Side Charging M-LOK AR-15 Upper Kit
    Rating:
    80%
    1  Review
    Special Price $809.99 $999.00
  21. 3 inch 9mm AR-9 MP5 Upper Kit | NR Side Charging
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    PRO2A 3" 9mm 1/10 Pistol Caliber NR Side Charging Melonite Upper with Flash Can Kit - MP5 Style
    Special Price $779.99 $959.99
  22. 7.5 inch 450 Bushmaster M-LOK Upper Kit | Made in the USA
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    PRO2A 7.5" 450 Bushmaster 1/24 Pistol Length Melonite M-LOK AR-15 Upper Kit
    Special Price $619.99 $799.99
  23. 5 inch AR-15 AR-V MP5 Style 9mm Pistol Caliber Melonite Upper w/Can Complete Kit
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    PRO2A 5" 9mm 1/10 Pistol Caliber Melonite Upper with Flash Can Kit - MP5 Style
    Special Price $579.99 $819.99
  24. 7.5 inch NR Side Charging 450 Bushmaster Upper Kit
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    PRO2A 7.5" 450 Bushmaster 1/24 Pistol Length NR Side Charging Melonite M-LOK AR-15 Upper Kit
    Special Price $849.99 $989.99
  25. 16 inch 350 Legend AR-15 Upper Kit | Pro2A Tactical
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    PRO2A 16" 350 Legend 1/16 Carbine Length Melonite M-LOK AR-15 Upper Kit
    Rating:
    100%
    1  Review
    Special Price $509.99 $769.99
  26. 16 inch 350 Legend AR-15 Upper Kit | NR Side Charging
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    PRO2A 16" 350 Legend 1/16 Carbine Length NR Side Charging Melonite M-LOK AR-15 Upper Kit
    Rating:
    93%
    1  Review
    Special Price $749.99 $929.99
  27. 20 inch 5.56 NATO AR-15 Upper Kit | Pro2A Tactical
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    PRO2A 20" 5.56 NATO 1/7 Rifle Length Melonite AR-15 Upper Kit
    Rating:
    93%
    1  Review
    Special Price $509.99 $789.99
  28. 20 inch 5.56 NATO AR-15 Upper Kit | NR Side Charging
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    PRO2A 20" 5.56 NATO 1/7 Rifle Length NR Side Charging Melonite M-LOK AR-15 Upper Kit
    Special Price $769.99 $999.99
  29. 5 inch AR-15 7.62x39 M-LOK Melonite Upper Flash Can Kit | Pro2A Tactical
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    PRO2A 5" 7.62x39 1/10 Micro Length Melonite AR-15 Upper with Flash Can Kit
    Special Price $509.99 $679.99
  30. 20 inch 350 LEGEND AR-15 Upper Kit | Top Quality
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    PRO2A 20" 350 Legend 1/16 Carbine Length Melonite M-LOK AR-15 Upper Kit
    Rating:
    100%
    1  Review
    Special Price $549.99 $819.99
  31. 20 inch 350 LEGEND AR Upper Kit | NR Side Charging
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    PRO2A 20" 350 Legend 1/16 Carbine Length NR Side Charging Melonite M-LOK AR-15 Upper Kit
    Special Price $789.99 $1,079.99
  32. 16 inch 450 Bushmaster AR Upper Kit | NR Side Charging
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    PRO2A 16" 450 Bushmaster 1/24 Carbine Length NR Side Charging Melonite M-LOK AR-15 Upper Kit
    Rating:
    87%
    1  Review
    Special Price $889.99 $999.99
  33. 3 inch 9mm AR-9 MP5 Upper Kit | 100% US MADE
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    PRO2A 3" 9mm 1/10 Pistol Caliber Melonite Upper with Flash Can Kit - MP5 Style
    Special Price $569.99 $809.99
  34. 18 inch 6mm ARC AR-15 Upper Kit | Pro2A Tactical
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    PRO2A 18" 6mm ARC 1/7.5 Mid Length Melonite M-LOK AR-15 Upper Kit
    Rating:
    100%
    1  Review
    Special Price $599.99 $829.99
  35. 7.5 inch AR-15 350 LEGEND Pistol Length M-LOK Melonite Upper Kit
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    PRO2A 7.5" 350 Legend 1/16 Pistol Length Melonite M-LOK AR-15 Upper Kit
    Rating:
    100%
    1  Review
    Special Price $489.99 $639.99
  36. 7.5 inch AR-15 350 LEGEND Pistol Length M-LOK Melonite Upper w/Can Complete Kit
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    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 $519.99 $699.99
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