Monumental Rifle & Pistol Club had its origin in the late 1940s, about the same time that the Associated Gun Clubs of Baltimore (AGC) was created. AGC was formed in 1948 when a number of World War II veterans in the Baltimore area began looking for a place to shoot. They organized with several other Baltimore shooting clubs — including Monumental Rifle & Pistol Club — to form the Associated Gun Clubs of Baltimore. Monumental was and is one of the original fifteen "Charter" member shooting clubs which, by virtue of their club Trustees and voting status, comprise the Board of Trustees which governs the Associated Gun Clubs of Baltimore. Today, these Charter member clubs, combined with an additional ten (non-voting) "Associate" clubs, represent the 25 AGC member clubs and approximately 2800 members — comprising the Associated Gun Clubs of Baltimore, Inc.

Monumental Rifle & Pistol Club offers its members — men and women, young and "young at heart" — the opportunity to enjoy all aspects of the shooting sports in a casual, clean, safe, friendly, and enjoyable environment. Through the auspices and facilities of the AGC, Monumental members have access to the Ranges seven days a week, from 8:00 A.M. to dusk on weekdays and from 10:00 A.M to dusk on weekends. (Unavailability of a particular range or all ranges may be due to weather conditions, or may be due to scheduled range usage for formal match events.)

The AGC ranges offers Monumental members opportunities for both casual or competitive shooting in the areas of smallbore rifle and pistol, centerfire pistol, high power rifle, black powder rifle and pistol, trap, and archery. AGC range facilities include:

• A fifty point outdoor, covered firing line pistol range, firing at 25 and 50 yards, equipped to handle NRA conventional pistol match competitions.
• A 100 yard, one hundred point outdoor, covered firing line rifle, black powder, and benchrest-equipped rifle and pistol range — with intermediate firing distances of 25, 50, and 75 yards.
• A ten point outdoor, covered firing line high power rifle range firing at 200 yards, with military-style target frames, equipped to handle national match events.
• Four trap fields, two of which are equipped with automatic trap houses, two of which use manually operated trap houses. In addition, AGC has two manual Lincoln traps available to club members for use on the trap fields.
• A three position 50 yard archery range.
• Two clubhouses of 50 and 100 seat capacities equipped with separate kitchens and restrooms — for meetings and social events.