Magpul Bev Block vs. Geissele Reaction Rod

Building my first AR and wondering if the Magpul Bev block is worth it or if I should just cheap out? M4E1 lower with a BCM upper if that matters. TIA : r/ar15

gun building

ACC] US Made AR-15 Upper Receiver Rod Tool [$45 Shipped] : r/gundeals

Building an AR15: 11 tools you'll need - The Mag Life

Geissele Ar15/m4 Reaction Rod

Magpul Bev Block vs. Geissele Reaction Rod

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Gunsmithing - Reaction rod

would this be sufficient for timing my muzzle device? Or does it need to be some sort of barrel clamp. : r/ar15