6.5 Grendel: Type I vs. Type II – What's the Difference?
I often get asked by clients about the difference between 6.5 Grendel Type I and Type II, so I wanted to clarify the key distinctions. The primary difference between the two is headspacing.
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Type II 6.5 Grendel: The original design of the 6.5 Grendel was intended to be used with a Grendel bolt and .136 headspacing. This configuration was patented and never released publicly, making it proprietary to certain manufacturers.
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Type I 6.5 Grendel: In response to patent restrictions, Les Baer Custom (LBC) adjusted the original design of the 6.5 Grendel. They modified the headspace to .125 and changed the neck diameter from .300 inches to .295 inches. This version is now called Type I Grendel.
Key Differences Between 6.5 Grendel Type I and Type II:
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Headspacing:
- Type II: .136 headspace
- Type I: .125 headspace
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Neck Diameter:
- Type II: .300 inches
- Type I: .295 inches (LBC design)
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Throat Taper:
- Type II: Compound taper
- Type I: Straight taper (LBC design)
Compatibility and Flexibility:
The 6.5 Grendel Type I (designed by Les Baer Custom) is completely compatible with the standard 6.5 Grendel chambering. Additionally, it works with the 7.62x39 standard bolt, which offers a significant advantage. This bolt compatibility provides greater flexibility for AR-15 platform users, allowing them to easily interchange barrels without additional modifications and keep costs down.
In conclusion, both Type I and Type II Grendel offer specific advantages, depending on your needs. Whether you choose the Type I or Type II, you'll get a highly effective cartridge for precision shooting, hunting, and tactical applications. The decision largely comes down to headspace compatibility and your preference for certain design features.
