The Extended Picatinny Base, offering 20 MOA / 5.8 MRAD of elevation for the DELTA 5 PRO bolt-action rifle, extends the length of available top-mounted 1913 Mil-STD Picatinny rail to the end of the handguard for a full 19.7" of continuous rail space. The one-piece design allows for the use of forward-mounted optics such as night vision and thermal. Attaches to the DELTA 5 PRO receiver and the top of the chassis forend with provided screws and M-LOK attachment hardware. Daniel Defense Delta 5 Pro Extended Picatinny Base 03-088-09490 - Light Mount Marks 9015 in Black