Hard concave nub for new Maxx CNC Hopup Chamber Series (M4A, M4i, M4P, M4W).
Use this nub with a straight bucking for maximum accuracy. Best for muzzle energy over 1.5j.
Choose the right nub length based on the size of the window on your inner barrel.
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DetailsCurrent Stock:SKU:UPC:Width: 11.000 (cm)Height: 5.500 (cm)Depth: 0.500 (cm)