Well I found some info on the Remington Contract 1863 Rifle a.k.a. Zouave. There was no info on them being issued to state militias but some were found to have been used in TWBTS. One was found in the James River near Petersburg in 1980 by a Nat'l Parks Dept archeologist.. Courtesy Artificer from a 2014 post in this forum, some were used by CSA Marines at Fort Fisher. Speculation is some were used by artillery troops in the forts around D.C. When Grant reduced the size of the troops around D.C. they brought them with them to the front. When sufficient numbers of Springfield's became available, they were traded out. Apparently the name Zouave was a "marketing" name invented by, take your pick, Bannerman, Sears Roebuck or Val Forgett's Navy Arms. Alledgedly Remington copyrighted the name 1863 Contract rifle. Most were accepted and kept at the arsenal but fewer than 2500, if that many, were issued. Also, the Georgia Armory of Midgeville Ga. produced a near identical arm but in extremely low numbers. They were stories of original Zouaves in mint condition selling for $20 in the 1960's. If anyone else has more info, then jump in.
Thanks