You can use these attachments immediately, even if the weapon is at Level 1. 2. In-Game Challenges
is extremely risky and typically results in permanent account bans. These tools work by injecting code into game files to grant access to camos, operators, and attachments that were not legitimately earned. Critical Security & Account Risks Permanent Account Bans : Activision views unlock tools as a violation of their Security and Enforcement Policy free mw 2019 unlock tool link
Using such tools carries severe risks to your account and personal security: You can use these attachments immediately, even if