Need to make it a double barrel
Then you just pull it off and flip it around. 
Complete thread:
- New - Ruger SR556 takedown -
Cherokee,
2015-07-02, 13:17
![[*]](themes/default/images/complete_thread.png "Open whole thread")
- SWitch barrel...spare barrel in 300 AAC. -
Rob Leahy,
2015-07-02, 13:28
- Ahhhhhh -
mcassill,
2015-07-02, 13:36
- Need to make it a double barrel - cas, 2015-07-02, 15:11
- Didn't think of that...good idea - Cherokee, 2015-07-02, 17:50
- Neat, but wonder about the out-o-whack optics question -
brionic,
2015-07-02, 19:33
- Neat, but wonder about the out-o-whack optics question - Slow Hand, 2015-07-05, 18:54
- Ahhhhhh -
mcassill,
2015-07-02, 13:36
- SWitch barrel...spare barrel in 300 AAC. -
Rob Leahy,
2015-07-02, 13:28