Exhibit 4
                                       
                             AMENDMENT NO. 1 TO 
                    AMENDED AND RESTATED CREDIT AGREEMENT
                                       

    AMENDMENT dated as of November 7, 1997 to the Amended and Restated Credit 
Agreement dated as of March 15, 1995 as amended and restated as of November 
14, 1996 (the "CREDIT AGREEMENT") among ALLIANT TECHSYSTEMS INC. (the 
"BORROWER"), the LENDERS party thereto (the "LENDERS"), MORGAN GUARANTY TRUST 
COMPANY OF NEW YORK, as Documentation Agent (the "DOCUMENTATION AGENT") and 
THE CHASE MANHATTAN BANK as Administrative Agent (the "ADMINISTRATIVE AGENT").

                             W I T N E S S E T H :

    WHEREAS, the parties hereto desire to amend the Credit Agreement to 
permit the Borrower to make certain additional Restricted Payments and to 
revise certain other provisions thereof;

    NOW, THEREFORE, the parties hereto agree as follows:

    SECTION 1 .  DEFINED TERMS; REFERENCES.  Unless otherwise specifically 
defined herein, each term used herein which is defined in the Credit 
Agreement has the meaning assigned to such term in the Credit Agreement. Each 
reference to "hereof", "hereunder", "herein" and "hereby" and each other 
similar reference and each reference to "this Agreement" and each other 
similar reference contained in the Credit Agreement shall, after this 
Amendment becomes effective, refer to the Credit Agreement as amended hereby.

    SECTION 2.  AMENDMENT OF SPECIFIED ONE-TIME AMOUNTS.  The definition of 
"Specified One-Time Amounts" in Section 1.01 of the Credit Agreement is 
amended to read in full as follows:  

         "SPECIFIED ONE-TIME AMOUNTS" means, at any date or for any period, (i)
    the sum of (A) $50,000,000 aggregate amount of Restricted Payments made or
    declared after the Original Closing Date and on or prior to November 1,
    1997 and (B) up to $60,000,000 aggregate amount of Restricted Payments made
    or declared after November 1, 1997 pursuant to clause (ii)(C) of Section
    5.15, in each case in this clause (i) solely pursuant to and in accordance
    with this Agreement,  (ii) the amount of restructuring charges by the
    Borrower and its Consolidated Subsidiaries taken in the fiscal quarter
    ending March 31, 1995 (but in no event greater than $38,000,000 in the
    aggregate) with respect to employee severance costs, certain employee
    benefit related liabilities and facilities consolidation, and (iii) the
    aggregate amount of charges (not to exceed $8,000,000) attributable to
    early extinguishment of up to $50,000,000 aggregate stated principal amount
    of Subordinated Notes (including, without limitation, premium over par
    value plus unamortized debt issuance costs). 




SECTION 3.  AMENDMENT OF RESTRICTED PAYMENTS COVENANT.  Section 5.15 of the
    Credit Agreement is amended to read in full as follows:

         SECTION 5.15. RESTRICTED PAYMENTS.  Neither the Borrower nor any
    Subsidiary will declare or make any Restricted Payment other than:

               (i)  any Restricted Payments required to be made by the 
         Borrower pursuant to the terms of employee benefit plans and stock 
         options, in each case as in effect on the Original Closing Date and 
         as modified thereafter, PROVIDED that the aggregate amount of 
         Restricted Payments permitted by this clause (i) shall not exceed 
         $10,000,000; and 

              (ii)  any Restricted Payments made or declared after the
         Effective Date to the extent that immediately after giving effect 
         thereto (x) no Default shall have occurred and be continuing and 
         (y) the aggregate amounts of all such Restricted Payments made or 
         declared pursuant to this clause (ii) does not exceed (A) 
         $10,841,000 (which is the unused amount as of the Effective Date of 
         the basket provided under Section 5.15(iii) of the Agreement as in 
         effect immediately prior to the Effective Date) PLUS (B) up to 
         $50,000,000 aggregate amount of Restricted Payments made or 
         declared after November 1, 1997 of the type referred to in clause 
         (iii) of the definition of Restricted Payment PLUS (C) up to 
         $60,000,000 of Restricted Payments made or declared after November 
         1, 1997 of the type referred to in clause (ii) of the definition of 
         Restricted Payment PLUS (D) the excess of 50% of positive 
         Consolidated Net Income for each fiscal quarter commencing after 
         March 31, 1997 and ending at the end of the most recent fiscal 
         quarter ended on or prior to the relevant date of determination 
         hereof OVER 100% of Consolidated Net Income for each such fiscal 
         quarter for which Consolidated Net Income is negative PLUS (E) 100% 
         of the aggregate net cash proceeds received by the Borrower from 
         any Person (other than a Subsidiary) as a capital contribution to 
         the Borrower or from the issue or sale (other than to a 
         Subsidiary), after the Effective Date of capital stock of the 
         Borrower.

    SECTION 4.  AMENDMENT OF MINIMUM CONSOLIDATED NET WORTH COVENANT.  
Section 5.20 is amended to read in full as follows:

         SECTION 5.20.  MINIMUM CONSOLIDATED NET WORTH.  Consolidated Net Worth
    shall at no time be less than the sum of (i) $142,696,000 PLUS (ii) (A) 80%
    of cumulative Consolidated Net Income for each fiscal quarter beginning
    after March 31, 1995 and ending on or prior to September 28, 1997 PLUS (B)
    50% of cumulative Consolidated Net Income for each fiscal quarter beginning
    after September 28, 1997 and ending on or prior to the relevant date of
    determination hereof, but in each case in this clause (ii), only to the
    extent that Consolidated Net Income for each such fiscal quarter or other
    period is positive PLUS (iii) (A) 80% of the increase in consolidated
    stockholders' equity of the Borrower from any Equity Issuances by the
    Borrower after March 31, 1995 and prior to September 28, 1997 PLUS (B) 50%
    of the increase in consolidated stockholders' equity of the Borrower from
    any Equity Issuances by the Borrower after September 28, 1997.




    SECTION 5.  REPRESENTATIONS OF BORROWER.  The Borrower represents and 
warrants that (i) the representations and warranties of the Borrower set 
forth in Article 4 of the Credit Agreement will be true on and as of the 
Amendment Effective Date and (ii) no Default will have occurred and be 
continuing on such date.

    SECTION 6.  GOVERNING LAW.  This Amendment shall be governed by and 
construed in accordance with the laws of the State of New York.

    SECTION 7.  COUNTERPARTS.  This Amendment may be signed in any number of 
counterparts, each of which shall be an original, with the same effect as if 
the signatures thereto and hereto were upon the same instrument.

    SECTION 8.  EFFECTIVENESS.  This Amendment shall become effective on the 
date (the "AMENDMENT EFFECTIVE DATE") when the Documentation Agent shall have 
received from each of the Borrower and the Required Lenders a counterpart 
hereof signed by such party or facsimile or other written confirmation (in 
form satisfactory to the Documentation Agent) that such party has signed a 
counterpart hereof.




    IN WITNESS WHEREOF, the parties hereto have caused this Amendment to be
duly executed as of the date first above written.


                                       ALLIANT TECHSYSTEMS INC.


                                       By /s/ Galen K. Johnson
                                         Title: Vice President and Treasurer


                                       MORGAN GUARANTY TRUST
                                         COMPANY OF NEW YORK


                                       By /s/ Diana H. Imhof
                                         Title: Vice President


                                       THE CHASE MANHATTAN BANK


                                       By /s/ James B. Treger
                                         Title: Vice President


                                       NATIONSBANK, N.A.


                                       By /s/ Valerie C. Mills
                                         Title: Senior Vice President


                                       CREDIT LYONNAIS CHICAGO
                                         BRANCH


                                       By /s/ Mary Ann Klemm
                                         Title: Vice President

                                       BANK OF AMERICA ILLINOIS


                                       By /s/ Therese E. Fontaine
                                         Title: Vice President




                                       THE BANK OF NEW YORK


                                       By /s/ Richard A. Raffetto
                                         Title: Vice President


                                       CITICORP USA, INC.


                                       By /s/ Walter Larsen
                                         Title: Attorney-in-fact


                                       DEUTSCHE BANK AG, NEW YORK
                                         AND/OR CAYMAN ISLANDS BRANCHES


                                       By /s/ Sheryl L. Paynter
                                         Title: Associate


                                       By /s/ Robert M. Wood Jr.
                                         Title: Director


                                       FIRST BANK NATIONAL 
                                         ASSOCIATION


                                       By /s/ Elliot J. Jaffee
                                         Title: Vice President

                                       MELLON BANK, N.A.


                                       By /s/ Martin J. Randal
                                         Title: Banking Officer




                                       BANK OF MONTREAL


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


                                       THE BANK OF NOVA SCOTIA


                                       By /s/ F. C. H. Ashby
                                         Title: Senior Manager, Loan Operations



                                       THE FIRST NATIONAL BANK OF 
                                         CHICAGO


                                       By /s/ J. Garland Smith
                                         Title: Managing Director


                                       THE MITSUBISHI TRUST AND
                                         BANKING CORPORATION, 
                                         CHICAGO BRANCH


                                       By /s/ Nobuo Tominaga
                                         Title: Chief Manager


                                       COMERICA BANK


                                       By /s/ Phillip A. Coosaia
                                         Title: Vice President




                                       COMMERZBANK 
                                         AKTIENGESELLSCHAFT, 
                                         CHICAGO BRANCH


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


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


                                       NATIONAL CITY BANK


                                       By /s/ Andrew J. Walshaw
                                         Title: Asst. Vice President


                                       THE SANWA BANK, LIMITED,
                                         CHICAGO BRANCH


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


                                       THE SUMITOMO BANK, LIMITED,
                                         CHICAGO BRANCH


                                       By /s/ Ken-Ichiro Kobayashi
                                         Title: Joint General Manager


                                       U.S. NATIONAL BANK OF OREGON 


                                       By /s/ Elliot J. Jaffee
                                         Title: Vice President




                                       MERRILL LYNCH SENIOR FLOATING
                                         RATE FUND, INC.


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


                                       VAN KAMPEN AMERICAN CAPITAL
                                         PRIME RATE INCOME TRUST


                                       By /s/ Jeffrey W. Maillet
                                         Title: Senior Vice President and 
                                                Director