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Incredibly slick - Cryptic 6.5mm Grendel II Bolt Carrier Group (BCG) - Complete

by Gary, Verified Owner from GA, United States Written on May 16, 2025
Review for Cryptic 6.5mm Grendel II Bolt Carrier Group (BCG) - Complete
Cryptic 6.5mm Grendel II Bolt Carrier Group (BCG) - Complete
Cryptic 6.5mm Grendel II Bolt Carrier Group (BCG) - Complete
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Gary's Review of Cryptic 6.5mm Grendel II Bolt Carrier Group (BCG) - Complete

I got the black one because of its crazy friction coefficient. I didn't really believe the 0.01 in the description, given that's the coefficient for skates on ice. Once I got and felt the thing, I am a believer! Never mind NiB, this thing is so smooth, I wiped the carbon off the bolt after about 100 rounds without any solvent. Wiped carbon off a bolt with a dry patch. Let that sink in.
Would Recommend: Yes
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Last updated 2026-06-15 UTC.