3
opERATIoNAl INSTRucTIoN
mouNTINg
ATN adjustable rings have rotatable inserts which allow for as much as 20 Minutes of
Angle, or approximately 20 inches at 100 yards, mounting adjustment without touching
the scopes internal windage and elevation mechanisms. This in turn allows the user to
maintain the scopes center of optical axis when performing the initial installation of a new
ATN rifle scope. This feature is extremely important in eliminating parallax and maintain-
ing a centered reticle with application of these units, while offering greater overall zero
range selectivity.
Each ATN scope is furnished with a set of non-offset rings usable with any Weaver or
Picatinny style mount. These may also be reversed for more inter ring distance options
or the recoil lug on the underside of each ring can be reversed (turned 180 degrees) by
removing the two screws attaching it to the ring. Additionally, we offer an offset ring that
when coupled with either standard or extended bases, will allow proper mounting on most
any production or custom action. The rings provided with your scope have the correct
height to allow for the necessary bell clearance required.
INSTAllATIoN
The Select the appropriate bases
for your application. These can be
2 piece, one piece or rail. When
installing the bases be sure and
use Locktite or an equivalent thread
locker on the mounting screws.
Most bases install with 6-48 screws
and these should be torqued to
about 22 inch/lbs. Generally all
receiver/base combinations have
some degree of misalignment. However, this is not a problem with the ATN rings as this
is easily compensated for by the floating ring inserts, assuring a stress free scope/mount/
receiver combination, another important accuracy consideration.
Attach the rings to the bases and determine if you have the right distance center to
center.
The rings must not be closer than 1/8 inch to any place where the scope transitions from
the 30 mm main tube including the turret area. Closer than 1/8 inch may cause turret or
variable power adjustment binding. The available offset ring has 1 inch of distance form
the center of the ring and used with or without extension base(s), if necessary, should
easily cover all base mounting or eye relief problems. Tighten the ring securing side nuts
finger tight.
