Evolution Gun Works AR Gas Block .875 Barrel w/ Picatinny Top Black

Evolution Gun Works AR Gas Block .875 Barrel Diameter w/Picatinny Top Black. Machined aluminum gas block properly directs gas and won?t interfere with optics accessories or free-float forend tubes. Installs easily with set screws. Does not include roll pin. Available in Black only. Specifications for Evolution Gun Works AR Gas Block with Picatinny Top: Manufacturer: Evolution Gun Works Color: Black Gun Make: AR Platform Package Contents: Evolution Gun Works AR Gas Block with Picatinny Top Evolution Gun Works 30612: AR Gas Block .875 with Picatinny Top Black