6.5 G to 22 ARC Conversion

[Mountain_Life]

If I have an AR-15 in 6.5 Grendel, is swapping the barrel the only change necessary to convert it to 22 arc?

 

[HandgunHTR]

If I have an AR-15 in 6.5 Grendel, is swapping the barrel the only change necessary to convert it to 22 arc?

Yep. Not sure what you are using in terms of a gas system (block, rifle/carbine, etc) or buffer, so those may need to be tweaked to get optimum performance, but you bolt and mags are the same between the two.

 

[Mountain_Life]

Thanks!

 

[Dixie]

Yes , long as you have a Type II bolt.
But only the early ones used the depth of the 7.62x39 bolt (Type I).
Doing the same thing myself.

 

[FredH]

The 22 ARC is an improvement. More BC and higher velocities. Like mine.

 

[Mountain_Life]

Update: I swapped the 6.5 Grendel barrel to a 20" Faxon 22 ARC barrel. It shoots great and cycles with no problems using a suppressor and an adjustable gas block.

I'm at 3100 fps with BLC-2 and 62 ELD-VT. Still below book max and also only 100 rounds into the barrel so I'm satisfied. With a 250 yard zero (1.5" high at 100) I can hold dead on to just past 300 with my thermal setup. Big improvement over the .223

 

[aledbetter05]

What are barrel life expectations in the 22arc vs 6.5 grendel? I'm looking at doing the same swap but with a ruger american predator

 

[khuber84]

What are barrel life expectations in the 22arc vs 6.5 grendel? I'm looking at doing the same swap but with a ruger american predator

Prob bout half. I'd suspect a 65gr should last 7-8k rounds. The 22arc likely half that.