Owner's Manual
21
The top of the X-Bolt receiver is drilled and tapped for scope bases.
Unlike other centerfire rifles, the X-Bolt utilizes four screws per scope
base instead of two for attaching each base to the receiver. From the
factory, the scope base holes are fitted with filler screws.
NOTICE! always use the correct Bases for this rifle and the
aPProPriate length screws.
1 Place your rifle in a gun vise or on a table or other safe/secure
location with the top of the receiver upward. Protect the finish
with rags or other padding.
2 Remove the bolt as instructed on page 13.
3 You should have a compatible one- or two-piece style base and
eight screws of the correct length.
4 Clean all oil, grease or dirt from the receiver top and from the
scope base parts.
5 Remove all eight filler screws from the top of the receiver using
a very small, thin-bladed gunsmithing-type screwdriver.
6 Pre-position the bases on the receiver top to determine the best
orientation of the bases.
7 Insert the screws through the bases and start each screw into its
respective hole in the receiver. Do not tighten the screws.
You must use screws of the appropriate length to ensure proper
thread engagement. Once the bases are installed, check inside the
receiver to verify that the base mounting screws are not too long
and interfering with the operation of the bolt.
Many gunsmiths find it helpful to use a drop of serviceable thread
locking compound to assure the screws stay tight. Make sure the
thread locking compound does not get into the action.
Be careful to assure that the threads of each screw engage
properly in the receiver threads to prevent stripping the threads
in the receiver.
09-044-BFA_XBolt Rifle OM.indd 21 2/10/09 2:29:23 PM










