“How do I install a stock on my Tippmann 98 Custom?” is one
of the most common questions we get. While putting a shoulder stock on a 98
Custom is not particularly difficult, there are a few tricks to make it easier.
Read on to learn more, as these instructions will also cover the general procedure
for disassembling your 98 Custom as well.
Before you EVER do any maintenance on any paintball marker,
always unload any paintballs, remove the loader and disconnect/ unscrew any air
sources! Always dry fire the marker with a barrel cover on the barrel to ensure
there is no air pressure left in the valve or regulators. Never proceed until
you are certain that the entire marker is unloaded and degassed!
Lay down a large towel onto your work surface. Not only will
this protect the table from any oil stains but it will also keep small parts
from rolling away. It’s always best to have all tools, oil, parts and other
necessities in place before you start working. The less you have to keep
getting up, the less likely you may bump the table and jostle parts loose. Make
sure you have plenty of lighting to see your work, and safety glasses are recommended
in case of any small springs and parts under pressure flying out.
In the photos and video we will install the Tippmann
Folding/ Collapsing Stock. This uses a base adapter to fit on 98s, US Army and
A5 markers. Standard 98 stocks will simply fit straight into the body.
For a 98 Custom Platinum model, go ahead and take off the
feed neck. With the bolt side facing up, completely loosen the 5 body screws holding the
left side body plate. Slowly and gently lift up the body plate from the rest of the marker. Take your time and lift as straight upwards as possible, so you don't jostle the loose internal parts.
While you’re at this stage, take a moment to view the proper
location for all the internal parts. The sear, the lever under the striker/
rear bolt, has two silver pins to guide the front (circled in green), and a black pin to hold it
in place (circled in blue). The black pin is hardened steel to withstand the pressure exerted
upon it, so be sure it is in its proper place. If you put a silver one in there
by accident then it will eventually bend or break. Note how the sear spring
under the sear sits in place (circled in red), and the location of all the trigger pins and
safety. This being an ACT (Anti Chop Technology) model, it has the upper spring
in the rear plug, and a linkage rod going between two pins (circled in yellow) near the top of the
body. Taking a picture with your phone for reference later is a good backup in
case you jostle parts loose.
Now, gently lift up the rear plug, sliding the springs out.
Take your stock and gently put the springs into each hole in the base. Be sure
that the striker/ rear bolt spring guide (the part that looks like a nail) is
inside the spring when you insert it, otherwise the spring will crimp and bend
when firing. The striker bumper, a thick black ring, needs to be in place to
buffer the action of the striker/ rear bolt. It is supposed to fit loose, so
the way it seems to be flopped into place is correct. The grooves in the stock
fit into the grooves in the body. Note how there is a tab in between the
grooves of the stock. This tab fits into the corresponding hollow in the marker
body, keeping the stock from rotating.
Once the stock is set in the grooves, and you are sure all
the pins, sear spring, and trigger components are properly in place, then it is
time to replace the body plate. Slowly and gently lower it into place, making
sure the safety goes through the corresponding hole and settles into the stock
grooves. Press it into place evenly; if it seems to take undue force then stop
and check for obstruction. When it is settled into place, replace all the body
screws, seating them snug. The first time you put a new stock in place it can
be a rather tight fit, making it hard to seat the body screw over the stock. This
will break in on later disassembly.
If you are installing a standard stock, then you are done! If using the Tippmann Folding/ Collapsible Stock, then you just need to slide the stock into the adapter and seat the retaining screw into place.
If you have a non-Platinum model the instructions are basically the same except you’re removing the entire body half. The one change is that you will want to leave the feed neck in place during the entire operation. This will hold the front sight blade in place, and prevent the small U-shaped sight spring from coming loose.
Watch Rory from ANSgear.com explain the procedure in the video below: