Frankford Arsenal Powder Measure Replacement Powder Reservoir fits all Frankford Arsenal powered powder measures. This is a replacement part for the reservoir found on the Frankford Arsenal Atomic Slug & Charge Tube Powder Measures. This Frankford Arsenal reloading tool is very durable, and can withstand all of the punishment that is thrown at it. The Frankford Arsenal Powder Measure Replacement Powder Reservoir was made to be used in conjunction with a syringe (not included) when metering powder charges for accuracy.