Question: Which weapons did Heckler & Koch develop?
Answer: Ak 4 rifle, Heckler & Koch AG-C/EGLM, Heckler & Koch AG36, Heckler & Koch G11, Heckler & Koch G3, Heckler & Koch G36, Heckler & Koch G41, Heckler & Koch HK21, Heckler & Koch HK417, Heckler & Koch HK433, Heckler & Koch HK69A1, Heckler & Koch MG4, Heckler & Koch P2000, Heckler & Koch PSG1, M27 Infantry Automatic Rifle, XM25 CDTE, XM29 OICW