GBRS GROUP on Instagram: "The Heckler & Koch MP7 is a personal defense weapon chambered for the HK 4.6×30mm armor-piercing cartridge designed by German defence manufacturer Heckler & Koch. We just wrapped up some content on the MP7 and some other sub-gun platforms a few days ago you’ll see on YouTube shortly. We appreciate all the support and feedback and can’t wait to release our last big project of the year. #gbrs #mp7a1 #h&k #4.6 #cqb #subgun"