B2B v4

(No reviews yet) Write a Review
16.00 Ounces

Made in Orlando, FL, PURGE Mods presents their newest, most affordable hard-hitting mechanical mod: The v4 from the Back 2 Basics series!  Featuring a solid 464 Naval Brass chassis, this heavy hitter is designed for use with 21700 battery cells!  Designed to feel and hit like a train, the B2B v4 is weighty, with a massive button housing and beefy copper contact pin.  All PURGE Mods come with a COA and hardshell carry case.



  • 464 Naval Brass
  • 29mm (tapers to 28.5mm)
  • Beefy copper contact
  • Massive firing button assembly
  • Hybrid connection
  • Magnetic firing button system
  • Deep CNC engravings


In the box:

  • 1 PURGE Mods Back 2 Basics v4
  • 1 Certificate of Authenticity



This is an UNREGULATED MECHANICAL MOD and is meant ONLY for advanced users! Please be extra careful when it comes to handling these types mods. Always clean the threads and contacts to help maintain its performance and safety. Please research the mod’s safety, compatible atomizers, ohm resistance laws, and battery safety before you make ANY decisions. Ensure that the internal components as well as the contacts have not been damaged or altered prior to handling or use. Mishandling, improper transportation, improper storage or use with liquid and/or foreign materials inside the chassis can and will result in damage and/or physical harm.

Never use an atomizer with a floating 510 pin, or an atomizer that does not have a protruding 510 pin.  Only use batteries that are in good condition, of a high quality, with undamaged wraps.  For detailed information on batteries currently on the market, refer to Mooch's Blog for a full spectrum of battery tests, voltage tests, mod tests, and more.