Answer of Word Craze System of gun barrel grooves
This is a tricky question of Word Craze which last appeared on Level 4715. Meanings or answers can change from time to time with each game update if you noticed a change on the answer of this clue please do let us know by commenting below so we can fix it A.S.A.P.
The solution below is:
Rifling
For other clue answers of Level 4715 Word Craze Level 4715 Answer open the the level link.