| The Nona-K or 2B16 is a 120-mm towed combination gunj/mortar. The ordnance is a towed variant of the ordnance of the 2S9 120-mm Self-propelled
Combination Gun.
When in the firing position the gun is supported on a small circular baseplate located under the forward part of the carriage
with the wheels raised clear of the ground, and on the two trails. The ordnance is fitted with a large multi-baffle muzzle brake with the recoil system
being mounted above the ordnance and extending about half-way along the barrel. A thin shield is provided either side of the ordnance
to give some protection to the gun crew from shell splinters with the left side of the shield being slightly higher than the right as this also protects
the sighting system. The upper part of the shield can be folded forward through 180° if required, although there is an aperture in the shield for the
direct fire telescopic sight. The elevation and traverse handwheels are located on the left side of the carriage as are the direct and indirect sights. The
breech is of the vertical sliding type and what appears to be a chamber indent device is fitted to retain the round in place when the weapon is fired at
high elevation. It has a rate of fire of 6 to 8 rds/min. The direct fire HEAT projectile is estimated to defeat up to 600mm of armor. In the indirect fire role
the mortar fires high explosive, white phosphorous and smoke rounds. The maximum range of the weapon is around 8000 m.
The trails are of a box section and locked together at the rear for towing, usually by a GAZ-66 2 ton truck which also carries the crew and a quantity of
ready use ammunition. When in the traveling configuration the ordnance is rotated to the rear and locked to the spades to reduce the overall length of the
system.
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