Product DescriptionThe TROY Industries .875 Low Profile Gas Block is designed for bull barrel rifles with a 0.875" gas block seat. Precision-machined from durable 4140 pre-hardened steel and finished with a MIL-STD manganese phosphate coating, it delivers a rugged, corrosion-resistant platform in a compact, low-profile form factor. Note: Gas tube roll pin is not included.Product Highlights Purpose-built for 0.875" bull barrel gas block seats (low-profile design for clearance under many handguards) Machined from 4140 pre-hardened steel for strength and long service life MIL-STD manganese phosphate finish helps resist wear and corrosion Ideal for heavy/bull barrel builds requiring a .875" journal gas block Gas tube roll pin not includedSpecs Brand: TROY Industries Product Type: Low Profile Gas Block Gas Block Journal Diameter: 0.875 in Material: 4140 pre-hardened steel Finish: MIL-STD manganese phosphate (black) Includes: Gas block only (gas tube roll pin not included) MPN: SGAS-875-00BT-00 UPC: 812699014578Disclaimer: We strive to provide accurate and up-to-date product descriptions, specifications, and images; however, errors or omissions may occasionally occur. We are not responsible for any inaccuracies or discrepancies in the content provided. If you notice anything incorrect or unclear, please contact us so we can correct it. When in doubt, we recommend verifying details directly with the product's manufacturer.