Silver Bullet M (Mechanical) ModOver the years the Silver Bullet has become a staple in most Mod Collections. Since the rise of Rebuildable Atomizers we have been working on a Mechanical version of the Silver Bullet. We've reviewed some of the complaints over the years and made some adjustments to the major ones. The Silver Bullet itself has been known as simply as a 'Work Horse' and tied with great craftsmanship and a warranty that rivals any Mod that is out there. When purchasing a Silver Bullet you know that the manufacturer stands behind their product.-Fully Mechanical Silver Bullet (Silver Bullet M)-Silver Plated Tellurium Copper Contacts-T6061 Housing-Stainless Steel 510 Connector-Adjustable Center Post up to 4.75mm-Made in U.S.A.The Silver Bullet M can take up to a 4.75mm Center Post on an Atomizer/RBA. Atomizer posts that are longer than that will not work on the device and will need to be adjusted. Center post of this height are normally only found on rebuild able tanks/atomizers. The majority of normal cartomizer/atomizers will require no adjustments. The center post of the Silver Bullet M can be adjusted to accept atomizers with center posts shorter than 4.3mm. Use caution when adjusting the center post. If the center post is set too high, or an atomizer with a center post longer than 4.75mm is used, the switch actuator cap can jam on the Silver Bullet M housing. If this happens, the switch may stick in the on position. If it is allowed to fire continuously it will result in damage to the cartomizer, atomizer, clearomizer, tank and potentially the battery. This will cause the battery to discharge and potentially cause the battery to vent. The spring in the base of the Silver Bullet M may collapse when this happens to attempt to prevent the battery from damaging itself. If the spring has collapsed please dispose of the battery properly and replace the spring. We do recommend properly storing the batteries when the device is not in use.- Never store a mechanical mod in your pocket, purse or anywhere else that may allow the Mod to activate.- There is no protection built in to the unit and we recommend using a Rechargeable Protected Li-Ion 18650.- Avoid over tightening on the device.- Use caution when storing Mechanical Mods, we do recommend removing the battery and storing the battery in a Battery Case - Do not over-discharge/overcharge- Recharge empty batteries (resting voltage ~3.6V) as soon as possible. Leaving batteries in discharged state will incur irreversible damage (capacity / cycle loss)- Do not short circuit ( will release tremendous current )- Do not dispose of in fire.- Do not leave battery in Vehicles.- Do not carry batteries loose in your pocket, purse or anywhere they can make contact with other metal objects..- Never leave a battery charging unattended.- Discontinue use of a battery if it looks worn, outter wrapping is torn, or it's acting unusual.