Description PRODUCT DETAILManufacturer: Aim Sports Model: Zero Hour UPC: 815879014795 SKU: ZHMGB01 Width: 2.6000 Length: 3.2000 Height: 1.0000 Weight: 0.0900 Finish: Black Phosphate Material: 1018 Steel Series: Micro Gas Block Size: .750" Type: Gas Block Weight: 0.10 oz