User Guide

compression fitting on the end of the
magazine tube. Reassembly of the
magazine, and removal/installation of the
three-shot magazine adapter is now
completed. To prepare for replacing the
barrel and forearm on your A-500G, pull the
operating handle on the breech-block fully
rearward, locking the breechblock back.
You are now ready to reinstall the barrel/
forearm assembly to the receiver as outlined
in “Assembly of Barrel and Gas System
Components” on page 18.
Invector Interchangeable
Choke System
All A-500G shotgun barrels have been
threaded to accept the Browning Standard
Invector Interchangeable Choke System.
You may confirm this by looking on the
right side of your barrel where the
specifications are inscribed, and where the
choke markings are normally located. The
word INVECTOR denotes that the barrels
are threaded. The degree of choke tube is
indicated twice on each choke tube:
Inscribed on the side of the tube, and
indicated with a “notch” code on the top
rim of the tube. Invector Choke Tubes are
made with tempered steel and are fully
compatible with all FACTORY
AMMUNITION (loaded in compliance with
SAAMI specifications) including Magnum
lead and steel shot loads and rifled slug
loads.
DONOTFIRE THIS SHOTGUN WITHOUT
HAVING AN INVECTOR CHOKE TUBE IN-
STALLED.
Permanent damage may result to the
threads.
DO NOT USE BROWNING INVECTOR
CHOKE TUBES IN ANY SHOTGUN BAR-
RELS NOT SUPPLIED BY BROWNING.
ALSO, DO NOT USE ANY OTHER CHOK-
ING DEVICE IN ANY SHOTGUN BARREL
SUPPLIED BY BROWNING. USE ONLY
CHOKE TUBES MARKED INVECTOR.
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