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Tex's First Grendel Build - 18" Piston SPR
#3
bj139 Wrote:It looks really nice. Why piston?

Thanks.

Had the ambi-side upper just sitting there after removing a heavy 6.8 barrel I sold to a friend. The side chargers are very cool, but DI gas puffs into your face thru the left side slit, even with a bolt filling the handle hole ("exhaust port"). Piston solves that problem.

Plus, I was curious to see how light and balanced I could make it with a piston. I had a piston on a 6.8. It bucked like wild AK and made a loud "TINK" sound when fired. This system is a different model and I had to do a bit of customization to get it to work with a side charger carrier. Really looking forward to getting it out on the range.
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Tex's First Grendel Build - 18" Piston SPR - by Tex Nomex - 01-15-2018, 05:07 AM

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