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Peter S. asked 4 years ago:
3 answers
Glock 21 Gen4 .45 ACP Black Pistol
Peter, FS = Fixed Sights on this non front serration Gen 4 Glock Model 21. Cheers and Happy Holidays!
James G.
4 years ago
FS - Fixed Sights
Randy I.
4 years ago
Fs stands for fixed sights. Hope this helps.
Josh T.
4 years ago
