https://www.thearmorylife.com/a-warriors-armor-the-m1a-sage-ebr-stock/
SAGE M1A Steel Scope Mount - Part No. 140014
The SAGE Steel Scope Mount weighs 9.8 oz  and is precision milled using USA made 4142 chrome-moly bar stock with a hardness of 28-32 RC then put it through a rigorous multiple point final inspection process to insure a quality fit and function prior to finishing with a manganese phosphate finish. Each mount comes with all mounting hardware, fasteners, hex wrenches, and detailed instructions.
A receiver inspection kit is included to insure the mating receiver was milling to original USGI specifications. If it falls within USGI specification mount enjoy the finest scope mount made for your M1A. If the receiver fails inspection or there is a question regarding the measurements please fax the measurement sheet to 860-742-4244 or email to sales@sadlak.com. If adjustments are necessary a $50 machining fee will apply.
 
! Handling firearms or firearms parts can expose you to lead and other petroleum products known to the State of California to cause cancer, birth defects, or other reproductive harm. Wash hands thoroughly after handling. For more information go to www.p65warnings.ca.gov (CA Health and Safety Code Section 25249.6).