Ultimate Liteweight Precision Grendel Build

[Sticks]

Ive run 10 round mags pretty fast. Proof's don't have an issue and they actually cool faster than my JP Grendel with radiator fins. Had it out in the morning and had no issues and never have. Christenson's do experience thermal drift, but nothing close the > 8 MOA.

It's got to be the handguard. All of this insulation pressed up against and torqued down onto the barrel nut. Instead of chamber heat passing through the barrel nut into an aluminum handguard where it can be dissipated, the heat has no where to go. Some will travel into the upper receiver but most will likely try to escape by going up the barrel.

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I may just send it back. I don't see any wisdom in proving my theory by overheating and scorching the throat of another barrel...... After the 25 shots above, the handguard on top of the barrel nut was barely warm.

Wanna trade? I have a 12" Centurion C4 rail on my middy.