J-20-XS-
17 / 221 / 223 Rem., 17 Fireball, 17 Mach 4, 204 Ruger, 218 Bee, 222 Rem. Mag., 300 AAC Blackout, 300 Sherwood, 300 Whisper, 32 Ideal, 32 Win. S. L., 350 Legend, 351 WSL, 6×47, 7.62 x 37 Musang, 6mm-223 Rem., 7.62×37 Musang, 810 Cadet.
Lid is at 2.35″ OAL.