ProMag AR-15 Drum Rifle Magazine 5.56mm/.223 100/rd

High-capacity drum magazines transform how AR-15 shooters approach sustained fire and training sessions. This 100-round design in 5.56mm/.223 delivers extended shooting periods without frequent reloads, a practical choice for range work and tactical practice. Shooters from Daly City to the greater Bay Area rely on dependable magazine solutions. Before purchasing any firearm accessory, review California firearm laws to ensure your setup meets current regulations.

100-Round Capacity and Drum Mechanics

Drum magazines operate differently than standard box designs, using a rotating feed system to deliver rounds consistently. The 100-round capacity means extended range sessions with minimal magazine changes, allowing you to focus on shooting rather than logistics. ProMag's drum construction handles 5.56mm and .223 ammunition reliably. For shooters exploring their full range of options, TacticCAL also maintains a California-compliant handgun catalog alongside long gun accessories. Weight and balance shift noticeably with a loaded drum, so practice handling before committing to extended use. TacticCAL is your local gun store in the Bay Area.

Frequently asked questions

Does this ProMag drum magazine work with all standard AR-15 receivers?

Yes, ProMag drums fit standard AR-15 magazine wells. Always test feed a few rounds before relying on any new magazine during critical shooting. Compatibility is generally universal across mil-spec platforms.

What's the weight difference between a loaded 100-round drum and a standard 30-round magazine?

A fully loaded 100-round drum weighs approximately 2.7 pounds, considerably heavier than a loaded 30-round box magazine. This affects rifle balance, sight picture stability, and shooter fatigue during extended sessions. Test it before range day.

Where can I ship an online gun order near San Jose?

TacticCAL Gun Store in Sunnyvale receives online firearm orders for buyers throughout the South Bay, including San Jose, Santa Clara, and the surrounding Bay Area. Looking for gun shop Oakland? Visit us in Sunnyvale.