Shilen Select Match 22 Rimfire 16 twist Ratchet rifled 4 groove SS M24 28" Modified 4" x 1.20" shank that tapers to .900" @ 26" - no fluting available for Shilen barrels.

22 Rimfire 16 twist SS #18 Light Varmint 29"
.217/.222 cut rifled 6 groove

22 Rimfire 16 twist 8 groove SS .900 straight 27"

22 Rimfire 13 twist 8 groove SS M24 27" button rifled

22 Rimfire 13 twist 8 groove SS 1.250 straight 27" button rifled