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6.5 Grendel

Bolt-Action Distance. Semi-Automatic Speed.
Push the boundaries of the standard AR-15 frame. Pro2A Tactical’s High-Velocity Distance and Precision Upper lineup is engineered explicitly for shooters who demand sub-MOA accuracy, flat trajectories, and extended supersonic range without stepping up to a heavy AR-10 platform.
Whether you are tracking varmints at 500 yards with the ultra-fast .22 ARC or 224 Valkyrie, ringing steel past 1,000 yards with the modern 6mm ARC, or hunting medium game with the time-tested 6.5 Grendel or 6.8 SPC II, our direct-to-consumer match systems deliver custom-shop accuracy at a competitive manufacturer price point.
The Pro2A Tactical Precision Advantage:
  • True Left-Handed Precision Assemblies: Maintaining a perfect cheek weld shouldn't mean taking facial gas blowback on every shot. We offer fully mirrored, left-ejecting precision uppers across our entire .22 ARC, 224 Valkyrie, 6mm ARC, 6.8 SPC II and 6.5 Grendel lines to keep southpaw long-range marksmen perfectly focused.
  • Premium Barrels: Distance requires consistency. Our barrels feature optimized twist rates (such as 1:7 for .22 ARC and 1:7.5 for 6mm ARC) and premium finishes like Salt Bath Nitride to ensure exceptional structural longevity and minimal thermal drift.
  • Tuned Gas Regulation for High-BC Bullets: Long-range cartridges rely on efficient powder burns. Our uppers feature fine-tuned gas system lengths—extending up to 22-inch and 24-inch rifle-length systems—and optional adjustable gas blocks to smoothly regulate bolt velocity when running heavy, high-ballistic-coefficient (BC) match projectiles.
  • Type II Bolt Face Integration: Avoid extraction and pressure failures common in piecemeal builds. Every precision upper assembly is optioned with an optimized, headspaced Type II bolt carrier group specifically matched to the Grendel/ARC case rim geometry.

SHOP Pro2a Tactical 6.5 Grendel AR-15 Pistol lineup with confidence. Amazing Quality at low prices - proudly made in the USA. Join the thousands of satisfied customers!

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  1. -20%
    P2A PATRIOT 12.5" 6.5 Grendel 1/8 Carbine Length Melonite M-LOK Pistol
    Rating:
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    7  Reviews
    Special Price $719.99 $899.99
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  2. -21%
    P2A PATRIOT 12.5" 6.5 Grendel 1/8 Carbine Length Melonite M-LOK Pistol with Flash Can
    Rating:
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    2  Reviews
    Special Price $749.99 $949.99
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  3. -21%
    P2A PATRIOT 12.5" 6.5 Grendel 1/8 Carbine Length Melonite M-LOK Pistol - GRAY/BLK
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    1  Review
    Special Price $769.99 $979.99
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  4. -22%
    P2A PATRIOT 12.5" 6.5 Grendel 1/8 Carbine Length Melonite M-LOK Pistol with Flash Can - GRAY/BLK
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    Special Price $799.99 $1,029.99
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  5. -17%
    P2A HERO 12.5" 6.5 Grendel 1/8 Carbine Length Melonite M-LOK Pistol
    Rating:
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    1  Review
    Special Price $909.99 $1,099.00
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  6. -17%
    P2A HERO 12.5" 6.5 Grendel 1/8 Carbine Length Melonite M-LOK Pistol with Flash Can
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    Special Price $939.99 $1,139.00
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  7. -18%
    P2A PATRIOT 12.5" 6.5 Grendel 1/8 Carbine Length Melonite M-LOK Pistol - GRAY
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    Special Price $819.99 $999.99
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  8. -18%
    P2A PATRIOT 12.5" 6.5 Grendel 1/8 Carbine Length Melonite M-LOK Pistol with Flash Can - GRAY
    Rating:
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    1  Review
    Special Price $849.99 $1,039.99
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  9. -20%
    P2A PATRIOT 12.5" 6.5 Grendel 1/8 Carbine Length Melonite M-LOK Pistol - BLK/FDE
    Rating:
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    1  Review
    Special Price $769.99 $959.99
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  10. -19%
    P2A PATRIOT 12.5" 6.5 Grendel 1/8 Carbine Length Melonite M-LOK Pistol with Flash Can - BLK/FDE
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    Special Price $799.99 $989.99
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  11. -16%
    P2A VALIANT 12.5" 6.5 Grendel 1/8 Carbine Length Melonite M-LOK Pistol - BLK/FDE
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    Special Price $1,249.99 $1,489.99
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  12. -16%
    P2A VALIANT 12.5" 6.5 Grendel 1/8 Carbine Length Melonite M-LOK Pistol with Flash Can - BLK/FDE
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    Special Price $1,279.99 $1,519.99
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  13. -21%
    P2A PATRIOT 12.5" 6.5 Grendel 1/8 Carbine Length Melonite M-LOK Pistol - FDE/BLK
    Rating:
    87%
    1  Review
    Special Price $769.99 $979.99
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  14. -22%
    P2A PATRIOT 12.5" 6.5 Grendel 1/8 Carbine Length Melonite M-LOK Pistol with Flash Can - FDE/BLK
    Rating:
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    Special Price $799.99 $1,029.99
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  15. -18%
    P2A PATRIOT 12.5" 6.5 Grendel 1/8 Carbine Length Melonite M-LOK Pistol - FDE
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    Special Price $819.99 $999.99
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  16. -19%
    P2A PATRIOT 12.5" 6.5 Grendel 1/8 Carbine Length Melonite M-LOK Pistol with Flash Can - FDE
    Rating:
    90%
    1  Review
    Special Price $849.99 $1,049.99
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  17. -16%
    P2A VALIANT 12.5" 6.5 Grendel 1/8 Carbine Length Melonite M-LOK Pistol with Flash Can - BLK/GRAY
    Rating:
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    Special Price $1,279.99 $1,519.99
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  18. -16%
    P2A VALIANT 12.5" 6.5 Grendel 1/8 Carbine Length Melonite M-LOK Pistol - BLK/GRAY
    Rating:
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    Special Price $1,249.99 $1,489.99
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  19. -19%
    P2A PATRIOT 12.5" 6.5 Grendel 1/8 Carbine Length Melonite M-LOK Pistol with Flash Can - BLK/GRAY
    Rating:
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    Special Price $799.99 $989.99
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  20. -20%
    P2A PATRIOT 12.5" 6.5 Grendel 1/8 Carbine Length Melonite M-LOK Pistol - BLK/GRAY
    Rating:
    93%
    1  Review
    Special Price $769.99 $959.99
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  21. -10%
    P2A VALIANT 12.5" 6.5 Grendel 1/8 Carbine Length Melonite M-LOK Pistol
    Rating:
    100%
    1  Review
    Special Price $1,199.99 $1,329.99
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  22. -11%
    P2A VALIANT 12.5" 6.5 Grendel 1/8 Carbine Length Melonite M-LOK Pistol with Flash Can
    Rating:
    100%
    2  Reviews
    Special Price $1,229.99 $1,379.99
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