The WAT-FB MSBS-5.56, also known as the MSBS Radon or the Grot, is a Polish assault rifle.
The rifle has been in development since 2007 by the WAT. It is projected to be a future modular rifle used by the Polish Army to replace the aging FB Beryl assault rifle.
The MSBS is a modular system which has part interchangeability between its many variants, such as barrel changeability. This allows its user to adapt the weapon based on the situation he/she is in. The weapon has simplified logistics when compared to other rfles.
The MSBS takes a variety of cartridges, from 5.56×45mm NATO all the way to 7.62×51mm NATO.
Conventional variant chambered for 5.56×45mm NATO.
Bullpup variant chambered for 5.56×45mm NATO.
Conventional variant for ceremonial purposes, adapted to fire blanks.
Conventional variant chambered for 7.62×39mm.
Prototype battle rifle chambered for 7.62×51mm NATO.