The L39A1 was issued without sights and with a .303 magazine to be used as a loading platform only. The best front sight is the AJP MF2 globe which takes standard Anschutz inserts. It's bigger in diameter than the P-H FS22B. The rear sights used were basically the same but from both AJP, (4/47, 4/80) and P-H, (5C). Keep an eye on Ebay as that's where they will most likely be found. Inserts can be had from Brownells in Iowa and Champion's Choice in Tennessee.