Universal Barrel Wrench Instructions
General
The Universal Barrel Wrench is designed to work with any barrel including those
fitted with compensators or ring-style sights. This is particularly important
when it is desired to eventually reinstall the barrel on the same receiver from
which it was removed. In order to do that, it cannot be made to be as strong as
the Heavy Duty Barrel Wrench. It does achieve substantial gripping force by
wrapping and deforming itself around the barrel with virtually full surface
contact. It can be turned in either direction. This wrench is more tolerant of
undersized aftermarket barrels. It can be damaged by over stressing it. A 3/4"
iron pipe x 2' long (minimum) handle (not provided) is recommended.
Barrel Removal
The Wrench should be fully disassembled. The grip mount will have to be forced
away from the barrel to allow the Wrench Jaw to pass by it. Reassemble the
Wrench after it has passed the grip mount projection. The Wrench should be
positioned clockwise (looking from the barrel muzzle) against the grip mount
because the grip mount will not turn with the barrel. The Wrench must be
tightened enough to prevent slippage on the barrel. It is important that all
four nuts be equally tightened. Place a folded business card between the grip
mount barrel projection and barrel to avoid scratching the barrel while turning.
Watch carefully for any sign of slippage and further tighten if necessary.
Barrels can be damaged by Wrench slippage but there is little danger to the
barrel from extreme tightening. Once the wrench reaches the other side of the
grip mount as the barrel is turned, the Wrench should be disassembled and the
Jaw removed from the barrel. Final barrel removal should be done by hand or with
a strap wrench.
Barrel Installation
The procedure for barrel installation is the same as for removal except that the
Wrench should be positioned counterclockwise against the grip mount to start.
Always install a barrel by hand and only use the Wrench for final tightening.
Douglas W. Richardson
2100 McReynolds Road, Malibu CA 90265
Telephone: 310-457-6400
E-Mail: ThompsonSMG@mail.com