The Shield Arms Easy-Install adjustable gas block revolutionizes the installation process by replacing the traditional gas tube roll pin with a convenient threaded pin, significantly simplifying the setup. This innovative design ensures a hassle-free installation experience, allowing you to focus on optimizing your AR-15's performance. With its adjustable feature, this gas block empowers you to fine-tune your rifle's gas system precisely, ensuring reliable operation by delivering just the right abipod of gas. Say goodbye to the challenges of over-gassing and enjoy a smoother, more efficient shooting experience with the Shield Arms Easy-Install adjustable gas block. Gas seat diameter - 3/4 inches Select the adjustable option Low-profile design Set screw style attachment Compatible with all standard-sized free-floated handguards