From the web site:
TA1 is a complete guide to personal armament in the Traveller universe. It condenses and expands data from Book 1, Book 4 and Supplement 4 of the Classic Traveller series, presenting it in one volume for probably the first time. Additional weaponry is also listed, including non-lethal weapons, unusual variants, and special hand-to-hand devices. All weapons are rated for T20 and CT, but can easily be used with most d20 based games!
TA1 also deals with the Imperial weapons permit system, arms suppliers of the Imperium, and expands upon the CT and T20 combat rules. Additional rules permit area attacks, suppression fire and movie-style abuse of handguns while performing daring acrobatic maneuvers!
And as if that wasn't enough, TA1 also has rules for concealing weapons and slipping them past the Starport detectors. Can you really afford to be without your copy?