Randall pistols are denoted by a four-character model notation, starting with an alphabetical prefix followed by three digits. These model codes are not marked on the pistols.

The alphabetical prefix will be either A, B, or C.
A = right-handed configuration only
B = left-handed configuration only
C = right-handed light weight model

The first numerical digit will be 1, 2 or 3.
1 = Service Model
2 = Service Model C or Raider
3 = Curtis E. LeMay Model

The second numerical digit will be a 1, 2 or 3.
1 = round top slide and fixed sights
2 = flattop slide and fixed sights
3 = flattop slide and adj. sights

The third numerical digit will also be a 1, 2 or 3.
1 = .45ACP cal
2 = 9mm Para.
3 = .38 Super.


Production Numbers

A111 3,421 mfg.
A112 301 mfg.
A121 1,067 mfg.
A122 19 mfg.
A131 2,083 mfg.
A211 992 mfg.
A212 76 mfg.
A231 574 mfg.
A232 5 mfg.
A311 361 mfg.
A312 1 mfg.
A331 293 mfg.
A322 9 mfg.
B111 297 mfg.
B121 110 mfg.
B122 2 mfg.
B123 2 mfg.
B131 225 mfg.
B311 52 mfg.
B312 w/.45 ACP Factory Conversion 1 mfg.
B312 9 mfg.
B321 1 mfg.
B331 45 mfg.
B2/321 1 mfg.
C211 5 mfg.
C331 1 mfg.
C332 4 mfg.

Matched Sets 1 left-handed, 1 right-handed (A111/B111) sharing the same serial number) 4 mfg.