Why You Should NEVER Use WD-40 on Guns
June 4, 2026
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14:52Now PlayingWhy You Should NEVER Use WD-40 on Guns
YouTube Description
as posted by the channelWD-40 is not generally recommended as a firearm lubricant or long-term protectant because it was designed primarily as a water-displacing penetrant (“WD” = Water Displacement), not as a gun oil.
It isn’t a good long-term lubricant
WD-40 provides temporary slickness, but the thin film it leaves behind doesn’t hold up well under the friction and heat generated by firearms. Critical moving parts can end up with inadequate lubrication compared with dedicated gun oils.
It can leave residue over time
As WD-40 ages and evaporates, it can leave behind a sticky varnish-like residue. In firearms, this can:
* Slow moving parts
* Cause sluggish triggers or safeties
* Attract dirt and fouling
* Contribute to malfunctions
It can migrate into ammunition
WD-40 is very thin and can creep into places you don’t intend. If it seeps into primers or cartridge cases, it may contaminate the ammunition and cause misfires or unreliable ignition.
It doesn’t provide the best corrosion protection
While it can temporarily protect metal from moisture, dedicated firearm protectants generally offer better long-term rust prevention, especially in humid environments or for firearms kept in storage.
It attracts dirt and powder residue
The oily film can collect dust, grit, and combustion byproducts, which can accelerate wear and make cleaning more difficult.
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