FB MSBS Grot

The MSBS-5.56 (Modułowy System Broni Strzeleckiej kalibru 5,56mm, "Module-based Firearm System 5.56mm Calibre") is a Polish next-generation modular rifle system developed by Fabryka Broni Radom as a replacement for AK-pattern rifles in Polish service. Consisting of a common upper receiver and handguard, the rifle can be configured with different lowers as either a traditional layout (MSBS-5.56K) or bullpup layout (MSBS-5.56B). Modular parts are planned to allow both configurations to be built up as standard rifle, squad support weapon, compact carbine or marksman rifle. 53,000 examples are currently ordered by the Polish military.

Known as Radon during development (the name being first announced in 2010), in 2017 it was announced that the rifle will officially be known as the Grot (a word used for various pointed weapons such as arrows, darts and javelins): this replaces both the old Radon name and seemingly also the MSBS name.

The Polish Ministry of Defense has created a new naming scheme for the Grot rifles, in the following formula:

• Grot - official name of the rifle, followed by a space
• C, B, R - standard, bullpup, or "representative" (inert drill version)
• 10, 16, 20 - barrel length in inches
• G, M, PS - grenadier, machine gun or DMR. This letter is skipped if the weapon is configured as an assault rifle.
• FB - standing for the manufacturer's name
• -Mx - x corresponding to the series number.

For example, a Grot C16GFB-M1 would be a standard layout series 1 rifle with a 16-inch barrel and a grenade launcher.

A grenade launcher module, the GPBO-40 grenade launcher, is also part of the system, with a standalone version called GSBO-40.

A 7.62mm variant has also entered the prototype phase.

The FB MSBS Grot and variants can be seen in the following films, television series, video games, and anime used by the following actors:

Specifications

(Development 2007-2015, production 2017-present)

• Manufacturer: Fabryka Broni Radom

• Type: Modular Rifle: common upper receiver with conventional and bullpup lowers: both have assault rifle, compact carbine, light support weapon, and designated marksman rifle configurations

• Caliber: 5.56x45mm NATO

• Length: 38.6 in (98 cm) Standard, 28.3 in (72 cm) Bullpup

• Barrel length: 10 in (25.4 cm),16 in (40.6 cm), 20 in (50.8 cm)

• Feed System: STANAG magazines

• Fire Modes: Semi-Auto / 3-Round Burst / Full-Auto

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FB MSBS Grot C

MSBS GROT C16 FB-A0 - 5.56x45mm

MSBS GROT C16 FB-A1 - 5.56x45mm

MSBS GROT C16 FB-A2 - 5.56x45mm

MSBS GROT C16 G FB-A0 - 5.56x45mm. With GPBO-40

Video Games

Game Title	Appears as	Mods	Notes	Release Date
Cross Fire	MSBS-5.56	Micro red dot sight, AN/PEQ-16b laser illuminator and a Magpul AFG	MSBS-5.56K Radon 2011 design mock-up	2007
Survarium	MSBS Radon		MSBS-5.56K Radon (2014-2015 model)	2015
Sniper: Ghost Warrior 3	"Archer AR-15"	with integral foregrip and more ergonomics	MSBS-5.56K Radon (2014-2015 model)	2017
World War 3	MSBS-K		C model	2018

FB MSBS Grot B

MSBS GROT B16 FB-A0 - 5.56x45mm

MSBS GROT B10 FB-A0 - 5.56x45mm

File:Grot-gbpo.jpg

MSBS GROT B16 G FB-A0 - 5.56x45mm. With GPBO-40

Video Games

Game Title	Appears as	Mods	Notes	Release Date
Call of Duty: Ghosts	MSBS	with various attachments	B model, based on 3D printed design mock-up	2013
ArmA III	Promet	with various attachments	B model, added in "Contact" expansion, 2019	2013
Warface	"MS RADEK"		B model	2013
Ironsight	MSBS556B	tan finish	B model	2018
World War 3	MSBS-B		Game states that the B model is chambered in .300 Blackout	2018

See Also

• Fabryka Broni Radom - A list of all firearms manufactured by Fabryka Broni Radom.