Hi All:
Rumaging around on the Internet for these manuals is kind of a pain, so I'm linking them to this forum from my Google Drive. These links should be good forever, unless Google goes under or the Internet disappears:
USMC Technical Manual (TM 10698A-10/1): Operator's Manual for Shotgun, Combat, 12 Guage Semi-Automatic M1014 1005-01-472-3147 November 2000 18410698000:
https://drive.google.com/open?id=0BxN5CusgXy6nbm1udXh5dzYyYUU
Benelli M4 Product Manual M4 (comes with the shotgun):
https://drive.google.com/open?id=0BxN5CusgXy6nNmlRcGxjWEpOaXM
ENJOY!