The Heckler and Koch MP5 22 LR is built around a 16.1" threaded barrel with 1/2x28 direct thread that keeps the platform suppressor-ready for hearing-safe rimfire use, wrapped in an authentic barrel shroud and HK-style handguard that faithfully replicate the MP5's iconic profile. The HK charging system and HK slap-able design deliver the same manual of arms as the full-size MP5, giving shooters a cost-effective training and range platform that builds genuine MP5 handling proficiency.