‘Smith Myth Busted: Do You Really Need to Lubricate an AR’s BCG?

   07.17.20

‘Smith Myth Busted: Do You Really Need to Lubricate an AR’s BCG?

Brownells has a YouTube video series called “Smyth Busters,” in which they discuss gunsmith myths. And this time, it’s about lubrication in AR-style rifles, also known as MSRs.

Do you need to lubricate the bolt carrier assembly? If so, where do you put the oil? If not, why not?

Old dog Steve Ostrem and young gun Caleb Savant team up to talk about just that, and to discuss the absolutely wrong (but different) instructions they each received in the US Army.

In short: Don’t put oil in combustion areas or vent holes. Do put it on wear areas — even on coated BCGs.

Agree? Disagree? Let us know what works for you. Meanwhile, check out the video.

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