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18" 6.5 Grendel - Hi-perf 5R rifling
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If your primary use is shooting targets with some hunting the Grendel is a good choice. There are more 6.5 target type bullets than usable hunting bullets. Hornady 123gr factory ammo is easily 1 MOA.

Criterion  profile barrels are ported to run factory ammo with a standard CAR buffer and spring. The barrels we offer have a hi performance 5R rifling instead of the old school 4 or 6 groove enfield rifling. They usually produce 60-90fps more than 4 or 6 groove barrels with the same ammo and can be loaded hotter due to the reduced engraving force.
    Barrel is Black- NO COUPONS on closeouts

These barrels need to be used with a .136" deep recess Grendel bolt.  Warning -DO NOT purchase a black Nitride, Nitride or Melonite treated bolt.  Nitride treatment of a bolt after it has been case hardened makes the bolt softer. The lugs will compress and headpace will increase.

flat rate $20 shipping

  • Chamber: 6.5 Grendel (SAAMI)
  • Bolt: uses .135 -.136 recess Any SAAMI Grendel bolt
  • Profile:  Tapers-.850- .750/.750GB/.718
  • Fluted: No
  • Barrel Length: 18"
  • Twist Rate: 1:8.5- Hybrid 5R rifling
  • Gas System: mid  Length
  • Diameter at Gas Port: .750"
  • Muzle Thread Pitch: 5/8x24
  • Material: stainless
  • Finish: melonite
  • Process: Button Rifled
  • Barrel Lining: melonite
  • Barrel Extension: M4
  • Assembly: Stripped
  • Weight: 2lb -3oz
gas tube:
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    (ARP) AR15 Performance LLC

    Key West, FL 33040

    Hi performance 5.56 & 6.8 SPC barrels and parts since 2007

    The best way to contact is by email

    Phone: 801-750-4216  8am-5pm eastern time  M- Fri only
    Sorry we do not export anything and do not have a storefront. Everything must be purchased online.

    6.8 SPC II, 5.56, 223 wylde, 6.5 Grendel, 224 Valkyrie, 270-08, 30 Herrett, TAC 6, 224 Predator, 6mm Predator,  224 Grendel, 6mm Grendel

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