Savage / Stevens 22 Caliber Semi-auto Bumpere
The earlier Savage/Stevens/Springfield 22
Semi-auto rifles use a machined steel "Bumper" with coil spring that
is set in the upper top of the rear barrel above the chamber. This
bumper's part number is #87-29. Over time, the factory
"modernized" this gun, utilized a cheaper stamped formed sheet
steel spring that took the place of the original. This new style bumper
was prone to breakage over time. They later went back to the older style
for some versions.
Below is the dimensions to modify the barrel
& receiver of the "New Style" to accept the "Old Style"
bumper. The barrel has to be removed to install these units. To do
this you will have to drive out the(2) barrel retainer cross pins in the front
bottom of the receiver. You might be able to hold onto the barrel,
with a brass rod against the bottom of the receiver, tap the receiver back and off
the barrel. If this does not work, then you will need to find a rod the
size that it will go in from the rear of the receiver, bear against the
rear of the barrel. Note - DO NOT DAMAGE THE REAR OF THE
Once the barrel is removed, you may have to open up the notch in the top of the barrel to allow the wider pivot tail of the older unit to fit. Then turn the receiver upside down, mark it in the location as shown below, drill a hole about 3/4 the way thru the upper part of the receiver, on the centerline with a #30 drill. The spring is 1/8", so you need a hole slightly larger.
In reassembly, place the bumper in the slot in
the barrel, slide it as a unit into the front of the receiver. When the
rear tail of the bumper nears the new spring hole, place the spring in place,
slide the barrel in farther while holding while guiding the bumper and
spring. Be sure the barrel is aligned in the proper rotation. Once
the spring is captivated by the bumper, you can push it all the way on. If
you aligned it properly, the retainer pins can be reinstalled, securing the
barrel to the receiver.
Now all that is left is the final reassembly.
Copyright © 2004 - 2015 LeeRoy Wisner All Rights Reserved
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Originated 12-24-2004 Last updated
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