This magazine lock kit is designed for the FN SCAR 16 and 17 rifles. This fixed-magazine lock kit allows the operator to drop the magazine by inserting a tool or bullet tip into the lock, but cannot activate the magazine release by hand.

This magazine lock is designed to conform to the law as written in CA Penal Code 978.20(a) which defines: "detachable magazine" means any ammunition feeding device that can be removed readily from the firearm with neither disassembly of the firearm action nor use of a tool being required. "A bullet or ammunition cartridge is considered a tool."