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                                                                        EX-10.30

                       SIXTH AMENDMENT TO CREDIT AGREEMENT


                  SIXTH AMENDMENT dated as of November 15, 1999 (this "Sixth
         Amendment"), to the Amended and Restated Credit Agreement dated as of
         October 15, 1997, (as amended by the First Amendment dated as of June
         26, 1998, the Second Amendment dated as of November 13, 1998, the Third
         Amendment dated as of March 31, 1999, the Fourth Amendment dated as of
         April 30, 1999, the Fifth Amendment dated as of September 30, 1999 and
         the Amended and Restated Credit Agreement as so amended being referred
         to herein as the "Credit Agreement"), among Firearms Training Systems,
         Inc., as Parent (the "Parent"), FATS, Inc., as Borrower (the
         "Borrower"), the lenders listed on the signature pages thereto (the
         "Lenders"), Bank of America, N.A., as Agent, (in such capacity, the
         "Agent"), Swingline Lender and Issuing Bank.

         The parties hereto have agreed, subject to the terms and conditions
hereof, to further amend the Credit Agreement as provided herein.

         Capitalized terms used and not otherwise defined herein shall have the
meanings assigned to such terms in the Credit Agreement (the Credit Agreement,
as amended by, and together with, this Sixth Amendment, and as hereinafter
amended, modified, extended or restated from time to time, being called the
"Amended Agreement").

         Accordingly, the parties hereto hereby agree as follows:

         SECTION 1.01. Amendment to Section 2.12 (a). Section 2.12(a) of the
Credit Agreement is hereby amended by (a) inserting the following after "third
quarter, 1999" and before the comma in Section 2.12(a)(i):

                      "and fourth quarter, 1999"

                  (b) The chart in Section 2.12(a)(ii) is hereby amended by (i)
deleting the installments due on November 30, 1999 and December 31, 1999 and
(ii) deleting the amount of "$1,400,000" due on March 31, 2000 and inserting the
amount "$4,200,000" in lieu thereof.

         SECTION 1.02. Forbearance. The Lenders have agreed to forebear
exercising their rights and remedies, which rights and remedies may arise as a
result of an Event of Default under the provisions of Section 7(c) of the Credit
Agreement with respect to Section 6.15 of the Credit Agreement (the "Financial
Covenants") (any such prospective Event of Default, a "Financial Covenants
Default"), against assets of the Borrower and its Subsidiaries that, pursuant to
the terms of the Loan Documents, secure the Obligations of the Borrower to the
Agent and the Lenders under the Credit Agreement and the other Loan Documents
until March 31, 2000 (the period from the Sixth Amendment Effective Date (as
defined below) to March 31, 2000 is hereafter referred to as the "Forbearance
Period") in order to give the Borrower the opportunity to negotiate in good
faith with the Lenders to achieve a modification of the Financial Covenants or a
waiver of any Financial Covenants Default or other arrangement, in any case
satisfactory to the Lenders in their sole discretion. It is understood that no
Letters of Credit shall be issued under the Credit Agreement during the
Forbearance Period. Nothing in this Section 1.02 shall imply any waiver or
release by the Agent or the Lenders of any rights or remedies to which they are
entitled under the Credit Agreement or other Loan Documents, or of the benefit
of any other terms and conditions of the Credit Agreement or other Loan
Documents other than as expressly set forth in this Section 1.02 during the
Forbearance Period. If as of March 31, 2000, each Financial Covenants Default,
if any, has not been waived in accordance with the Credit Agreement or the
Financial Covenants have not been modified to the satisfaction of Lenders in
their sole discretion, the Forbearance Period shall terminate, and the Lenders
may exercise all of their rights and remedies under the Credit Agreement and
other Loan Documents.

         SECTION 1.03. Representations and Warranties. The Borrower hereby
represents and warrants to the Agents and the Lenders, as follows:

                 (a) The representations and warranties set forth in Article III
         of the Amended Agreement, and in each other Loan Document, including
         any Schedules thereto, are true and correct in all material respects on
         and as of the date hereof and on and as of the Sixth Amendment
         Effective Date (as defined below) with the same effect as if made on
         and as of the date hereof or the


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         Sixth Amendment Effective Date, as the case may be, except to the
         extent such representations and warranties expressly relate solely to
         an earlier date.

                 (b) Each of the Borrower and the other Loan Parties is in
         compliance with all the terms and conditions of the Amended Agreement
         and the other Loan Documents on its part to be observed or performed
         including, without limitation, the obligation to pay all principal and
         interest due on and prior to the date hereof and no Default or Event of
         Default has occurred or is continuing under the Amended Agreement,
         other than the Defaults or Events of Default described in Section 1.02
         hereof.

                 (c) The execution, delivery and performance by the Borrower of
         this Sixth Amendment have been duly authorized by the Borrower.

                 (d) This Sixth Amendment constitutes the legal, valid and
         binding obligation of the Borrower, enforceable against the Borrower in
         accordance with its terms, subject to the effect of bankruptcy,
         insolvency, reorganization, arrangement, moratorium, fraudulent
         conveyance, voidable preference or similar laws and the application of
         equitable principles generally.

                 (e) The execution, delivery and performance by the Borrower of
         this Sixth Amendment (i) does not conflict with or violate (A) any
         provision of law, statute, rule or regulation, or of the articles of
         incorporation or by-laws of the Borrower, (B) any order of any
         Governmental Authority or (C) any provision of any indenture, agreement
         or other instrument to which the Borrower is a party or by which it or
         any of its property may be bound and (ii) does not require any consents
         under, result in a breach of or constitute (alone or with notice or
         lapse of time or both) a default or give rise to increased, additional,
         accelerated or guaranteed rights of any person under any such
         indenture, agreement or instrument.

         SECTION 1.04. Effectiveness. This Sixth Amendment shall become
effective only upon satisfaction of the following conditions precedent (the
first date upon which each such condition has been satisfied being herein called
the "Sixth Amendment Effective Date"):

                 (a) The Agent shall have received duly executed counterparts of
         this Sixth Amendment which, when taken together, bear the authorized
         signatures of the Parent, the Borrower and all the Lenders.

                 (b) The Lenders shall be satisfied that the representations and
         warranties set forth in Section 1.03 hereof are true and correct on and
         as of the Sixth Amendment Effective Date.

                 (c) There shall not be any action pending or any judgment,
         order or decree in effect which, in the judgment of the Lenders or
         their counsel, is likely to restrain, prevent or impose materially
         adverse conditions upon performance by the Borrower or any other Loan
         Party of its obligations under the Loan Documents.

                 (d) The Lenders shall have received such other documents, legal
         opinions, instruments and certificates as they shall reasonably request
         and such other documents, legal opinions, instruments and certificates
         shall be satisfactory in form and substance to the Lenders and their
         counsel. All corporate and other proceedings taken or to be taken in
         connection with this Sixth Amendment and all documents incidental
         thereto, whether or not referred to herein, shall be satisfactory in
         form and substance to the Lenders and their counsel.

                 (e) The Agent shall have received payment of and all fees and
         expenses set forth in Section 1.06.

         SECTION 1.05. APPLICABLE LAW. THIS SIXTH AMENDMENT SHALL BE GOVERNED
BY, AND CONSTRUED IN ACCORDANCE WITH, THE LAWS OF THE STATE OF NEW YORK, EXCEPT
TO THE EXTENT THAT THE FEDERAL LAWS OF THE UNITED STATES OF AMERICA MAY APPLY.

         SECTION 1.06. Fees and Expenses. The Borrower shall pay all reasonable
out-of-pocket expenses incurred by the Agent and the Lenders in connection with
the preparation, negotiation, execution, delivery and enforcement of this Sixth
Amendment, including, but not limited to, the reasonable fees and disbursements
of counsel.

         SECTION 1.07. Reporting Requirements. The Borrower will provide the
Agent, for distribution to the Lenders, with a written bi-weekly status report
on its efforts to sell the Borrower, including a list of potential acquirers,
offers made to date, pending offers and scheduled meetings relating to such
sale, except that to the extent that the Borrower has entered into
confidentiality agreements prohibiting it from disclosing to the Lenders the
name of the potential acquirer such name may be withheld from the Lenders. Any
such confidential information supplied to the Agent and Lenders will be held in
confidence by the Agent and the Lenders, except to the extent that the Agent

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or any Lender is required by any law, regulation, legal process, legal duty or
regulatory authority to disclose such confidential information. Nothing in this
Section 1.07 shall imply any waiver or consent to sale of the Borrower or that
Lenders will consent to such sale.

         SECTION 1.08. Counterparts. This Sixth Amendment may be executed in any
number of counterparts, each of which shall constitute an original but all of
which when taken together shall constitute but one agreement. Delivery by
facsimile by any of the parties hereto of an executed counterpart of this Sixth
Amendment shall be as effective as an original executed counterpart hereof and
shall be deemed a representation that an original executed counterpart hereof
will be delivered, but the failure to deliver a manually executed counterpart
shall not affect the validity, enforceability or binding effect of this Sixth
Amendment.

         SECTION 1.09. Credit Agreement. Except as expressly set forth herein,
the amendments provided herein shall not by implication or otherwise limit,
constitute a waiver of, or otherwise affect the rights and remedies of the
Lenders, the Agent or the other Secured Parties under the Amended Agreement or
any other Loan Document, nor shall they constitute a waiver of any Default or
Event of Default, nor shall they alter, modify, amend or in any way affect any
of the terms, conditions, obligations, covenants or agreements contained in the
Amended Agreement or any other Loan Document. Each of the amendments provided
herein shall apply and be effective only with respect to the provisions of the
Amended Agreement specifically referred to by such amendment. Except as
expressly amended herein, the Amended Agreement shall continue in full force and
effect in accordance with the provisions thereof. As used in the Amended
Agreement, the terms "Agreement", "herein", "hereinafter", "hereunder", "hereto"
and words of similar import shall mean, from and after the date hereof, the
Amended Agreement.


         IN WITNESS WHEREOF, the parties hereto have caused this Sixth Amendment
to be duly executed by their duly authorized officers, all as of the date first
above written.

                                  FIREARMS TRAINING SYSTEMS, INC.
                                  as Parent


                                  By:
                                     ------------------------------------------
                                     Name:
                                     Title:


                                  FATS, INC.
                                  as Borrower


                                  By:
                                     ------------------------------------------
                                     Name:
                                     Title:


                                  BANK OF AMERICA, N.A., as Agent, Swingline
                                  Lender and Issuing Bank and individually as
                                  a Lender


                                  By:
                                     ------------------------------------------
                                     Name:
                                     Title:


                                  U.S. BANK NATIONAL ASSOCIATION


                                  By:
                                     ------------------------------------------
                                      Name:
                                      Title:


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<PAGE>   4

                                   FIRST SOURCE FINANCIAL LLP, by First Source
                                   Financial, Inc., as Agent/Manager


                                   By:
                                      -----------------------------------------
                                      Name:
                                      Title:


                                   BHF (USA) CAPITAL CORPORATION


                                   By:
                                      -----------------------------------------
                                      Name:
                                      Title


                                   BANK AUSTRIA CREDITANSTALT
                                   CORPORATE  FINANCE, INC. (FKA
                                   CREDITANSTALT CORPORATE FINANCE, INC.)


                                   By:
                                      -----------------------------------------
                                      Name:
                                      Title:


                                   By:
                                      -----------------------------------------
                                      Name:
                                      Title:


AGREED and CONSENTED,
as of the date first above written:

DART INTERNATIONAL, INC.

By:
   --------------------------------
   Name:
   Title:


FIREARMS TRAINING SYSTEMS, INC.

By:
    -------------------------------
    Name:
    Title:


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