They do what they're designed "They do what they're designed to do which is keep the caliburn Evo point tight in the barrell. . . I've tried using the caliburn points without the spring's and they don't work very well, but with the spring's they stay tight in the barrell." — Charles W. (5/5)
After inserting these springs my "After inserting these springs my Caliburn points simply wouldn’t fit into the darts. So pointless in my opinion!😂" — Adrian U. (1/5)
Not possible to insert "These don't work for me at all since they won't go into the barrell at all." — Finnilks (2/5)