In 1995, the Polish Armed Forces sought to develop a 5.56mm assault rifle to replace the existing Tantal. By December 1995, 11 prototypes had been produced. In 1997 the weapon was evaluated and accepted into service as the 5.56mm karabinek szturmowy wz. 1996.
The Beryl's design and operating system resemble that of the Tantal, and the main differences are the result of chambering the smaller 5.56mm cartridge. It's barrel can mount a flash suppressor unlike the earlier Tantal. In addition, the suppressor can be used to fire rifle grenades. It is also tapered at the fore end to hold a bayonet.
The tubular metal stock is folding and has a recoil pad on its end.
The handguard is angled to enhance the supporting hand's grip. It has a pair of notches which enable the mounting of the Wz. 1974 rifle grenade launcher.
Some Beryls' have been mounted with Picatinny rails and hand rails, including foregrips. A carbine variant of the Beryl exists and is known as the Mini-Beryl.
-Poland (The Kbs Wz. 1996 Beryl is one of Poland's standard issue rifles)
It has seen action in Poland's deployments to Iraq, Afghanistan, Bosnia / Herzegovina, Kosovo, and Lithuania.