Engine49guy
Member
According to the SCSW the new heavy barrel was introduced in 1986 during the last two years of 17-4 production and was available in 6", 8 3/8" but also in 4" so the Model 18 was discontinued,
(Btw the one pictured above is the first one I've ever seen).
In 1988 the 17-5 has a new yoke retention system and radius stud package with the new style heavy barrel in 4", 6" and 8 3/8".
(Btw the one pictured above is the first one I've ever seen).
In 1988 the 17-5 has a new yoke retention system and radius stud package with the new style heavy barrel in 4", 6" and 8 3/8".