TomkinsSP
Member
Not much is interchangeable betw the BKS and BM.
The BKS is actually a shortened alloy frame version of the magazine safety Model B,,That being the Model BS.
(the 'S' on any STAR model designation notes a magazine safety).
Those Model BS pistols the BKS were designed off of were put into production starting in '68. The mag safety added to improve the # of points the pistols would get for importation to the US under the new 68GCA.
The Model A became the Model AS. There was also a Model U that became the Model US. This latter one is hardly ever encountered. It's a .30Luger version that was made for importation m ostly to countrys where 9mmLuger was banned from civilian use. Italy for one.
The BKS (Model B, alloy frame, magazine safety) shortened slide and bbl.
First STAR pistol to use a captured recoil spring and guide assembly. The slide stop, & thumb safety are Model B.
There may be some small parts/springs/ect that interchange w/the BM but I've never had the need to try and refit any from the two.
Early production BKS had the ;positive ignition' firing pin (protrudes from the breech face with the hammer down.
Later guns after approx ser#1,250,000 have the rebounding/Colt style.
The BKS was marketed in the USA as the 'STARLIGHT'.
GArcia early on ws responsible for most of the monikers for the STAR pistols I believe. The paperwork and boxes also carried the STAR factory Model designation.
Like the Model AS & BS,,the BKS had a brother Model UKS. A 7.65 Parabellum version for those who saw the need or could not have the 9mmLuger version.
The alloy frames are not designed for constant use like a steel frame no matter the mfg IMO. The STAR pistols are the same. For a carry, practice and occasional shooter they will outlast most people.
But I wouldn't take it to the range every week and throw 400rds down range with it and not expect it to show some wear.
I've never seen a 'broken' alloy STAR frame, but they are not that common anyway.
Once upon a time I had a "S" and a "SA" in .32 acp (7,65 Browning it was actually marked) and .380acp. (I have held but not owned a SS in .380 acp) I don't remember which was which (S/SA) they were exactly the same size. Looked like 3/4 scale government models.
I have also seen several As rechambered and stamped for .38 auto.