S&T Motiv, the successor to Korean defense company Daewoo Precision Industries, was showing off a new variant of their K2 rifle that equips the Republic of Korea Armed Forces, alongside the M16A1 which remains in use with second-line units. The new rifle is called the K2C1, and features a new quad accessory rail replacing the previous plastic handguard, full-length 1913 Picatinny optics rail, and AR-15-style six position collapsing butt, which also folds. The new rifle will come in two variants, short and long barreled, with 305mm (12″) and 465mm (18.3″) barrels.

The new K2A1, long-barreled variant. Image source: milidom.net

The spec sheet of the rifle reads:

K2C1

Caliber: 5.56x45mm

Ammunition: K100/K101/M193/M196/M855/SS109

Weight (w/o magazine): 3.68 kg

Operating System: Gas Operated

Length:         K2C1 | K2C1 (short barrel)

Overall:  1,014 mm | 854 mm

Retracted: 940 mm | 780 mm

Folded:     730 mm | 570 mm

Barrel Rifling

Number of Grooves: 6

Twist of Rifling: Right Hand

Pitch of Rifling: 185.4 mm (7.3″)

Muzzle velocity: 960 m/s (M193), 920 m/s (K100)

Rate of Fire: 700 ~ 900 rds/min

Effective Range: 500 m (K100)

Modes of Fire: Semi, Auto, Burst (3rds)

Magazine Capacity: 20 rds, 30 rds

Image source: milidom.net

Image source: milidom.net

Image source: milidom.net

Previously, a variant of the K2 had been shown with a new rail and handguard, but the new K2C1 is distinct; gone is the integral rear sight mount, in favor of rail-mounted BUIS. The K2C1 can also mount a grenade launcher just by removing the lower handguard, unlike the K2, which required complete removal of the handguard.