Shilen Select Match 22 Rimfire 16 twist Ratchet rifled 4 groove SS M24 28" Modified 4" x 1.20" shank .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 15 twist 8 groove SS Remington Varmint 27" button rifled

22 Rimfire 15 twist 8 groove SS M24 27" button rifled