它由一桿5.56mm的步槍截短並休整而成。It has two triggers,兩个红色的指示灯, ejection port, a bolt handle and an ammunition capacity of five .223 rounds, granting it excellent firepower. A very rare weapon in New California during 2161, becoming more popular amongst the gangs in and around New Reno in 2241.
According to Joshua Sawyer, 无名枪的名称(That Gun)源自玩家们对.223手枪的戏称——"That Gun in Fallout and Fallout 2."。
The .223 pistol was planned to be included in S.T.A.L.K.E.R.: Clear Sky as an easter egg, along with the Bozar and generic .223 ammunition, but only remains partially implemented in the game's resources.
This pistol's appearance is modelled exactly after Deckard's handgun in Blade Runner, right down to its double triggers and red LEDs.