
The Daewoo Precision Industries K1/K1A is a South Korean selective-fire assault rifle developed by Agency for Defense Development (ADD) and manufactured by Daewoo Precision Industries and Dasan Machineries. It entered service in the Republic of Korea Armed Forces in 1981. Although the K1 uses .223 Remington, it is classified as a submachine gun by the South Korean military and the manufacturer, because the K1 was intended to replace the M3 submachine gun.

The Daewoo Precision Industries K4 is a 40x53mm high-speed Automatic Grenade Launcher in use with the Republic of Korea Armed Forces. It is very similar to the American Mk 19 grenade launcher.
The Daewoo Precision Industries K5 or K5/DP51 series is a 9×19mm semi-automatic pistol produced by S&T Daewoo of South Korea.

The Daewoo Telecom K7 is a 9×19mm Parabellum submachine gun with an integral suppressor used by the Republic of Korea Armed Forces. It is based on the Daewoo K1A submachine gun, but is simplified by utilizing a blowback action rather than the gas impingement system of its parent firearm.

The Daewoo Precision Industries USAS-12 is an automatic shotgun manufactured in South Korea by Daewoo Precision Industries during the 1980s.
S&T Daewoo XK8, also known as DAR-21, is a 5.56×45mm NATO bullpup assault rifle developed and manufactured by S&T Daewoo intended to replace Daewoo Precision Industries K2 assault rifle for the Republic of Korea Armed Forces.

The Hong Sang Eo torpedo, also called the K-ASROC, is a vertically launched anti-submarine missile successively developed and tested by South Korea's University of Science and Technology, the Korea Agency for Defense Development (ADD) and the Republic of Korea Navy in 2009. The Red Shark missile has a range of 12 miles (19 km) and carries a K745 Blue Shark torpedo that is deployed by parachute near the intended target. After release, the Blue Shark independently searches for the target.

Hyunmoo-3 is a new cruise missile that is to be fielded with the military of Republic of Korea. It is designed by Agency for Defense Development (ADD). The name Hyunmoo comes from a mythical beast described as the "Guardian of the Northern Sky", perhaps hinting North Korea.

The South Korean K30 Biho twin 30 mm self-propelled anti-aircraft weapon was developed to meet the operational requirements of the Republic of Korea Armed Forces for a highly mobile short range air defense system suited to the operational and terrain conditions of the Korean peninsula. It combines an electro-optically guided 30 mm gun system with a surveillance radar system on a K200 chassis. It supplements the K263A1 Chungung, a self-propelled 20 mm Vulcan system.

The S&T Daewoo K11 DAW is a multi-weapon resembling the earlier US Objective Individual Combat Weapon in concept, design and operation. It consists of two separate weapons combined into a single unit: a lower assault rifle chambered to fire 5.56×45mm NATO rounds and an upper 20×30mm grenade launcher firing both conventional and air-bursting "smart" grenades, along with its integrated digital sighting unit.
The S&T Motiv K14 is a .308 Winchester bolt-action sniper rifle developed by S&T Motiv, and is a standard sniper rifle of the Republic of Korea Armed Forces.

The SSM-700K Haeseong (C-Star) Anti-ship Missile is a ship launched sea-skimming surface-to-surface anti-ship cruise missile developed by the South Korean Agency for Defense Development (ADD), LIG Nex1 and the Republic of Korea Navy in 2003. The missiles are deployed on KDX-II and KDX-III destroyers as of 2006, each carrying 8 and 16 of the missiles respectively, and on Ulsan-class frigates.