Otis Technology 5.7mm Pistol & Rifle Cleaning Kit (FG-223-57)

The Otis FG-223-57 is the dedicated cleaning kit for the 5.7x28 family of firearms. Otis's Memory-Flex flexible cleaning cable system threads through the bore from breech to muzzle, which is the right approach for the PS90's bullpup geometry where direct rod access is awkward. The kit includes 5.7x28-specific bore brushes, patches, and a compact zipper case for storage.

The kit covers the entire 5.7x28 host family in one purchase: FN PS90, FN P90 (registered), FN Five-seveN, Ruger 57, PSA Rock, CMMG Mk57 Banshee, and KelTec P50. For shooters who run multiple 5.7 hosts, this is the right consolidation. For PS90-only owners, the bullpup geometry alone justifies the Otis cable approach over a traditional rod kit.