New England Custom Gun Service
741 Main Street
Claremont, NH 03743
tel: (603) 287-4836      info@necgltd.com        fax: (603) 287-4832

	Thank you for your inquiry into our peep sights. We have found the tolerances to vary from gun to gun. Therefore it is sometimes hard to determine if a change in the front sight height is required when using our peep sights. On average, yes a higher front sight is required. However from time to time the original sight height will work. 
We suggest first installing a peep sight and then shoot it with the original front sight insert at 100 yards. This will then establish a base line in which we can calculate a replacement height. Once the gun is shot, we would need to know these three things: 

1) The distance from the front sight to the peep sight. 
2) The overall height of the present front sight insert. 
3) The amount of correction required at 100 yards. 

With this information we can then determine what height will work the best on your gun.