The FB Radom MSBS Grot (Polish: Modułowy System Broni Strzeleckiej „Grot”, English: Modular Firearm System "Spearhead") is a modular assault rifle developed and manufactured by FB "Łucznik" Radom.
There are two basic variants of the rifle: a conventional layout assault rifle and a bullpup. The MSBS is the first machine carbine fully designed and produced completely in Poland since World War II as well as the largest firearms sale contract taken on by the Polish arms industry since 1989.

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