Were any horseshoe magazines for RUBY style pistols delivered to the french during WW1 and were they ever used by the French "trench cleaners" with the RUBY I have read that the Ruby was made in some variants "select fire or full auto" and with extended barrels and were these clips issued with any. I'm curious because RUBY's were clip sensitive do to all the different manufacterers invloved. Or was the horseshoe magazine a post war thing. I have seen a picture of a Ruby style pistol with this magazine it appears on a pistol called a Union. I believe it to be a "post war" piece and was the Union french made and not spanish? I am just an interested person in this. Any info would be appreciated.