Fostech Rifle Barrel Drum Magazine for M107A1 and M82A1 .50 BMG 20/rd

Heavy-caliber precision shooting demands magazines engineered to handle extreme pressures and reliable feeding cycles. The Fostech drum design delivers 20-round capacity for .50 BMG platforms, making it a serious tool for long-range work. Whether you're shipping an order to the Redwood City area or handling local transfers, understand your state's requirements by reviewing California firearm laws before purchasing.

20-Round Drum Capacity and Feeding Reliability

Drum magazines for the M107A1 and M82A1 require careful handling and proper maintenance to ensure consistent function. The Fostech design accommodates the full 20-round load, though shooters should test feeding with their specific ammunition lot before extended range sessions. When purchasing through an online retailer or local dealer, confirm your FFL's receiving procedures—many have specific requirements for magazine transfers. Check FFL transfer pricing at your local facility to understand total acquisition cost. TacticCAL is your local firearms dealer in the Bay Area.

Frequently asked questions

Is this drum magazine compatible with both the M107A1 and M82A1?

Yes. The Fostech drum is engineered for both platforms. Before first use, test fit and verify smooth rotation and reliable feeding with your specific rifle to confirm proper seating.

What weight should I expect when fully loaded?

The magazine itself ships at 5.248 pounds. When loaded with twenty .50 BMG rounds, expect total weight around 15–17 pounds depending on ammunition specifications.

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. Find FFL dealer Morgan Hill at TacticCAL.