Not on an Enfield, Garand or M14. However....
...on the M1 carbine, yes. I've shot my carbine in a few rifle and 3 gun matches just for fun, and more than once I found myself wondering why I wasn't hitting anything because I was aiming with an "ear". 
Complete thread:
- If you were gonna peep sight a 10/22 takedown... -
rob,
2015-12-13, 14:27
![[*]](themes/default/images/complete_thread.png "Open whole thread")
- I was gonna mention the WGRS but... -
Hoot,
2015-12-13, 15:14
- Skinner has one specifically for the Take-Down... - Hoot, 2015-12-14, 06:57
- If you were gonna peep sight a 10/22 takedown... -
Hobie,
2015-12-13, 15:59
- If you were gonna peep sight a 10/22 takedown... -
rob,
2015-12-13, 19:09
- I've never been bothered by the "ears" on the No 4, M1 -
Hobie,
2015-12-14, 06:44
- Not on an Enfield, Garand or M14. However.... - cas, 2015-12-14, 16:13
- They haven't bothered millions of American GIs... you'll -
Rob Leahy,
2015-12-14, 20:24
- I already ordered the XS sights but... - rob, 2015-12-14, 22:25
- I don't remember them being an issue on my AR but it's been. - rob, 2015-12-14, 22:29
- I've never been bothered by the "ears" on the No 4, M1 -
Hobie,
2015-12-14, 06:44
- If you were gonna peep sight a 10/22 takedown... -
rob,
2015-12-13, 19:09
- If you were gonna peep sight a 10/22 takedown... -
Sarge,
2015-12-13, 16:05
- If you were gonna peep sight a 10/22 takedown... - rob, 2015-12-13, 18:58
- I was gonna mention the WGRS but... -
Hoot,
2015-12-13, 15:14