I /J frame target hammers:
These first appeared on the Model of 1953 Rimfire I frame Kit gun and Target models.
• 1953 The I/J rim fire .375" (actual .360 - .370”) target hammer was introduced as standard with the first Model of 1953 .22/32 Kit Guns and .22/32 Target models. The center fire target hammer for the I & J frames became available as well although listed as .347”; actually the same. There is only one size and variations in width are strictly artifacts of hand finishing.
The first use of the CF target hammer and grooved target trigger as standard features in my observation, was on the J frame Mod 60-4 Target introduced 1990, 3" HB full lug and Rd Butt with Uncle Mike’s rubber grips, .360”-.375” target hammer, grooved .340” target trigger (both optional in CCH for blued models). This model became regular production 1992 to 1999. However in 1996 as the model 60-10 was changed to the J Magnum frame with MIM parts, standard smooth combat trigger and narrow hammer spur:
Photo credit: linde
Mod 36-1 Target, one of 213 made in 1975, .400” optional target trigger and target hammer:
I/J frame target and combat triggers:
• 1953 I and J .400” grooved target trigger available factory installed likely in 1953, at least by 1956 when 1st observed factory installed in #24363 Pre 35. Followed by .335” grooved and smooth; and in 1986 the .312” smooth combat became standard and all others discontinued.
1984-89 – .400” Grooved/.335” Gr & smooth J frame, and .500”/.400” K, L & N frame grooved and smooth target triggers deleted.
1986 - New smooth forged combat trigger became standard: .312” J, .312 - .320” K, L & N including MIM triggers, and in 2003 MIM .340” X frame.
First J frame use of.340 combat trigger as standard was on the Model 36--6 Target, 615 made in 1989.