[Scanr]

Wednesday I just bought my first AR15, actually a Bushmaster XM15 E2S M4. New out of the box. I want to break this in properly and was wondering what I should do?

Thanks in advance,
Tom

[H1500308]

Clean and lubricate it well before you go to the range. Then shoot it until you are ready to go home.

[Rubber_Duck]

What H1500308 said.

Also, don't worry about barrel break-in; no such thing with chrome lined barrels. Just shoot it, shoot it, and shoot it some more.

[killzone]

Clean it very good.

Then I'd clean it after every 100 rounds or so for a while until you have a good feeling that things are functioning normal.

KZ

[briansmithwins]

The only thing I'd add is don't be afraid of the lube. Lube generously and often, kinda like voting in Chicago.

BSW

[rino451]

Clean and shoot it. Unless you bought some spiffy match barrel. In that case, read about break-in on the Internet, make your own decision and then shoot it.

[RockyMtnTactical]

Shoot, clean, repeat.