John Norrell appeared to manufacture these--- (aluminum body/aluminum trip).
Here is the list that I have for RDIAS's:
Broadhead Armory BA-15 (Wyandotte, Michigan)
BAX XXX (aluminum body/steel trip)
BAX XXX (steel body/steel trip)
CENTRE FIRARMS (New York, New York)
3-0XXXXX (? body/? trip)
CRB/C. Ray (BP, Texas)
AR 15XXX (steel body/steel trip)
DLO (Stamford, Connecticut)
0XXX (steel body/steel trip)
Edward Benisek (?, ?)
0XXX (steel body/steel trip)
F.B. Whitman & Son (Winsted, Connecticut)
2XX (aluminum body/steel trip)
22XX (aluminum body/steel trip)
FJT (?, ?)
47XXFJT (aluminum body/steel trip)
JCB, Inc. (Portland, Oregon)
02XJCB (steel body/steel trip)
13XJCB (? body/? trip)
John Norrell (Jacksonville, Arkansas)
? (aluminum body/aluminum trip)
John Stemple (?, ?)
S1XX (steel body/steel trip)
Scorpion Armament (Baytown, Texas)
SA 59XXXX (steel body/steel trip)
SWD (Atlanta, Georgia)
S N 0X (steel body/steel trip)
TTI (Las Vegas, Nevada)
00X (steel body/steel trip)
Wilson Arms (Brunswick, Georgia)
B2XX (steel body/steel trip)
Tony