Discontinued: Weaver 10M Side Mount Base, 48416 for Marlin 512 SlugMaster, 55

Used on the Following Firearms:

  • Marlin 512 SlugMaster; 55 (drill and tap)
  • New Haven 495B

Side mount brackets detach and attach in seconds, just like the detachable top mounts (the bases themselves do not). Side mount brackets are available in a “high profile” in a standard or long length to accept a variety of scopes.

Use only with Side Mount Ring Assembly:
Weaver 1″ Detachable Side Mount Rings – High Bracket & Rings 49350
or
Weaver 1″ Detachable Side Mount Rings – Long High Bracket & Rings 49340


The distinction between inferior quality and premium Scope Rings is undeniable. At MSP, we only offer Scope Mounts from the most trusted brands like Weaver. Buy with confidence that we stand behind the product we sell.