Originally Posted By: chrome/22
Originally Posted By: Direct-Drive
If this was purchased as a complete rifle from Rock River it should be marked .223 Wylde.
It will not be marked Wilson Arms.
There will also be a barrel code stamped on the barrel.
You can Google the barrel code for more info.
You will probably have to remove the handguard to see some of these marks.


Took the AR down, removed the gas block/tube assembly & free floating hand guard

Found no barrel code on this one. Side of the action is marked Rock River Arms Cal. 5.56mm



c/22

"side of the action"....Do you mean lower receiver ?

If so, you must have an early RRA.
Most all the new stuff says "cal-multi" because they are being built into so many different calibers these days.
It is so easy to change barrels out on these things, you tend to ignore receiver markings.

More info on RRA barrel markings...
https://www.ar15.com/archive/topic.html?b=3&f=118&t=280677
There is a clarification on their Wylde chambers.
Mine is a 16" HBAR SS mid-gas Wylde.
I think the mark is 215.

Example


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