Original Yugoslavian M77 A1 7.62x51mm Milled Gas Blocks with Gas Shut-Off & Sight Ladder.  Military surplus used parts in very good to excellent condition.

⚠  WARNING: This product can expose you to chemicals including arsenic, which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information, go to www.P65Warnings.ca.gov.