EXHIBIT 10.7

                             STOCK OPTION AGREEMENT
                           (NONQUALIFIED STOCK OPTION)


EMPLOYEE/OPTIONEE:          Dr. Bogdan C. Maglich

NUMBER OF SHARES:           2,480,011

OPTION EXERCISE PRICE:      $ 0.134 per  Share

DATE OF GRANT:              April 24, 2002

EXERCISE TERM:              Through November 30, 2008

VESTING:                    Immediate



     THIS OPTION AGREEMENT (the "AGREEMENT") is entered into effective as of the
24th day of April, 2002 by and between HIENERGY TECHNOLOGIES, INC. (formerly SLW
Enterprises  Inc.) (the "Company"), a Washington corporation, and the individual
designated  above  (the  "Optionee").

                                    RECITALS
                                    --------

     A.   An  employment  agreement  (the  "Employment  Agreement") was executed
          between  the  Optionee  and  HiEnergy  Microdevices,  Inc., a Delaware
          corporation  and  a majority-owned subsidiary of the Company, on March
          6,  2002,  which  confirmed the grant of an option to purchase 111,040
          shares  of  HiEnergy  Microdevices,  Inc. common stock to the Optionee
          with  an  exercise  price  of  $3.00  per  share;  and
     B.   In  connection  with  a  business  combination between the Company and
          HiEnergy Microdevices, Inc., on April 24, 2002, the Board of Directors
          of  the  Company  approved  the  grant to the Optionee of an option to
          purchase  2,480,011  shares  of the Company's common stock pursuant to
          Rule 506 of Regulation D under the Securities Act of 1933, as amended,
          in  exchange  for canceling his HiEnergy Microdevices, Inc. option and
          other  transactions  taken  or proposed to be taken in connection with
          such  HiEnergy  Microdevices,  Inc.  option;  and
     C.   The  Optionee  performs  valuable  services  for  the  Company and its
          subsidiary,  HiEnergy  Microdevices,  Inc.;


Stock Option Agreement, Dr. Bogdan C. Maglich - Page 1
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NOW,  THEREFORE, the parties agree to the terms and conditions herein, including
the  recitals.

1.   GRANT OF OPTION.

     1.1     Option.  An  option  to  purchase  shares  of  the Company's Common
             ------
Stock,  par  value  $0.0001  per  share, (the "Shares") is hereby granted to the
Optionee  (the  "Option").

     1.2     Number  of  Shares.  The  number  of  Shares  that the Optionee can
             ------------------
purchase  upon  exercise  of  the  Option  is  set  forth  above.

     1.3     Option Exercise Price.  The price the Optionee must pay to exercise
             ---------------------
the  Option  (the  "Option  Exercise  Price")  is  set  forth  above.

     1.4     Date  of  Grant.  The  date  the  Option  is  granted (the "Date of
             ---------------
Grant")  is  set  forth  above.

     1.5     Type  of Option.  The Option is intended to be a Nonqualified Stock
             ---------------
Option.  It  is  not intended to qualify as an Incentive Stock Option within the
meaning  of  Section  422  of the Internal Revenue Code of 1986, as amended from
time  to  time,  or  any  successor  provision  thereto.

     1.6     Condition.  The  Option  is conditioned on the Optionee's execution
             ---------
of this Agreement.  If this Agreement is not executed by the Optionee, it may be
canceled  by  the  Board.

2.   DURATION.

     The  Option  shall  be exercisable to the extent and in the manner provided
herein  during  the  Exercise Term, which is set forth above; provided, however,
that  the Option may be earlier terminated as provided in Section 1.6 or Section
5  hereof  or  in  the  Employment  Agreement.

3.   VESTING.

     The  Option  is  fully  vested,  and  may be exercised, with respect to the
Shares,  subject to earlier termination of the Option as provided in Section 1.6
and  Section  5  hereof  or  in  the  Employment  Agreement.

4.   MANNER OF EXERCISE AND PAYMENT.

     4.1     To  exercise the Option, the Optionee must deliver a completed copy
of  the  Option  Exercise  Form,  attached  hereto  as Exhibit A, to the address
indicated on such Form or such other address designated by the Company from time
to  time.  Contemporaneously  with the delivery of the Option Exercise Form, the
Optionee  shall


Stock Option Agreement, Dr. Bogdan C. Maglich - Page 2
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tender  the  Option Exercise Price to the Company, by cash, check, wire transfer
or such other method of payment (e.g., delivery or attestation of Shares already
owned) as may be acceptable to the Company. The Option may be exercised in whole
or  in  part  with  respect  to  the  vested  Shares. Within thirty (30) days of
delivery  of  the  Option Exercise Form and tender of the Option Exercise Price,
the  Company  shall  deliver certificates evidencing the Shares to the Optionee,
duly  endorsed  for  transfer  to  the  Optionee,  free  and clear of all liens,
security  interests,  pledges  or  other  claims  or  charges.

     4.2     The  Optionee  shall  not be deemed to be the holder of, or to have
any  of  the rights of a holder with respect to any Shares subject to the Option
until  (i)  the  Option  shall have been exercised pursuant to the terms of this
Agreement  and  the  Optionee  shall  have  paid the full purchase price for the
number  of Shares in respect of which the Option was exercised, (ii) the Company
shall  have  issued  and  delivered  the  Shares  to the Optionee, and (iii) the
Optionee's  name shall have been entered as a stockholder of record on the books
of  the  Company,  whereupon  the  Optionee  shall  have  full  voting and other
ownership  rights  with  respect  to  such  Shares.

5.   TERMINATION  OF  EMPLOYMENT.

     5.1     Termination  of Employment Due to Death.  In the event of the death
             ---------------------------------------
of  the  Optionee, who at the time of his death was an Employee and who had been
in  continuous  status as an Employee since the date of the grant of the Option,
the  Option  shall  terminate on the expiration date provided in this Agreement.
Under  these  circumstances, the Option will be exercisable at any time prior to
such termination by the Optionee's estate, or by such person or persons who have
acquired  the  right  to  exercise the Option by bequest or by inheritance or by
reason  of  the  death  of  the  Optionee.

     5.2     Termination  of  Employment  Due  to Disability.  If the Optionee's
             -----------------------------------------------
status  as  an  Employee  is  terminated at any time during the Option period by
reason  of a disability (within the meaning of Section 22(e)(3) of the Code) and
if  the Optionee had been in continuous status as an Employee at all times since
the  date  of  grant of the Option, the Option shall terminate on the expiration
date  provided  in  this  Agreement.

     5.3     Termination  of  Employment  for  Other  Reasons.  If  the
             ------------------------------------------------
Optionee's status as an Employee is terminated by the Optionee or the Company at
any  time  after  the  grant  of  the  Option for any reason other than death or
disability,  as  provided in Sections 5.1 and 5.2, then the Option terminates on
the  expiration  date  provided  in  this  Agreement.

     5.4     Employment by Subsidiary.  For purposes of this Section and Section
             ------------------------
8, employment with the Company includes employment with any Parent or Subsidiary
of  the  Company  and  service  as  a  Director  of the Company or any Parent or
Subsidiary  shall  be  considered  employment  with  the  Company.  A  change of
employment  between  the  Company  and  any  Parent  or  Subsidiary  (or between
Subsidiaries  or  between  a  Subsidiary  and  a Parent) is not a termination of
employment  under  this  Agreement.


Stock Option Agreement, Dr. Bogdan C. Maglich - Page 3
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6.   TRANSFERABILITY.

     The  Option  shall not be transferable other than by will or by the laws of
descent and distribution.  During the lifetime of the Optionee, the Option shall
be  exercisable  only  by  the  Optionee.

7.   RESTRICTIONS ON THE OPTIONS; RESTRICTIONS ON THE SHARES.

     The  Option  may  not  be  exercised  at any time unless, in the opinion of
counsel  for  the  Company, the issuance and sale of the Shares issued upon such
exercise  is  exempt  from  registration  under  the  Securities Act of 1933, as
amended,  or  any  other  applicable  federal  or  state securities law, rule or
regulation,  or  the  Shares  have  been  duly  registered under such laws.  The
Company  shall not be required to register the Shares issuable upon the exercise
of the Option under any such laws.  Unless the Shares have been registered under
all  applicable  laws,  the  Optionee  shall  represent, warrant and agree, as a
condition to the exercise of the Option, that the Shares are being purchased for
investment  only  and  without a view to any sale or distribution of such Shares
and  that  such  Shares  shall  not  be transferred or disposed of in any manner
without  registration  under  such laws, unless it is the opinion of counsel for
the  Company  that  such  a  disposition  is exempt from such registration.  The
Optionee  acknowledges  that  an appropriate legend, in such form as the Company
shall  determine,  giving  notice  of  the  foregoing  restrictions shall appear
conspicuously on all certificates evidencing the Shares issued upon the exercise
of  the  Option.

     The  Optionee  also  acknowledges  and  agrees that, in connection with any
public  offering  of  the  Company's  stock,  upon request of the Company or the
underwriters  managing  any  underwritten public offering of the Company's stock
and  making  such request with the approval of the Company's Board of Directors,
not to sell, make any short sale of, loan, grant any option for the purchase of,
or  otherwise  dispose of any of his Shares without the prior written consent of
the Company or such underwriters, as the case may be, from the effective date of
such  registration  for  so long as the Company or the underwriters may specify,
but  in  any  event  not  to  exceed  180  days.

8.   NO RIGHT TO CONTINUED EMPLOYMENT.

     Nothing  in this Agreement shall be interpreted or construed to confer upon
the  Optionee any right with respect to continuance of employment by the Company
or  any Parent or Subsidiary, nor shall this Agreement interfere in any way with
the  right  of the Company or a Parent or Subsidiary to terminate the Optionee's
employment  at  any  time.

9.   ADJUSTMENTS UPON CERTAIN EVENTS.

     9.1     Adjustments  Upon  Changes  in  Capitalization.  Subject  to  any
             ----------------------------------------------
required  action  by  the  shareholders of the Company, the event of a change in
capitalization,  such  as a stock split or other subdivision or consolidation of
Shares  or  the  payment of any


Stock Option Agreement, Dr. Bogdan C. Maglich - Page 4
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stock  dividend  consisting  of  Shares or any other increase or decrease in the
number  of  Shares effected without receipt of consideration by the Company, the
Company  shall  make appropriate and proportionate adjustments to the number and
class  of Shares subject to the Option and the purchase price for such Shares or
other stock or securities; provided, however, that conversion of the Option will
not  be  deemed  to  have  been "effected without receipt of consideration". Any
adjustments as a result of a change in the Company's capitalization will be made
by the Board of Directors, whose determination in that respect is final, binding
and  conclusive. Except as otherwise expressly provided in this Section 9.1, any
issue  by the Company of shares of stock of any class, or securities convertible
into  shares of stock of any class, shall not affect the number of Shares or the
exercise  price  of  the Shares subject to the Option, and no adjustments in the
Option shall be made by reason thereof. The grant of this Option does not in any
way  affect  the  right  or  power  of  the  Company  to  make  adjustments,
reclassifications,  reorganizations  or  changes  of  its  capital  or  business
structure.

     9.2     Liquidation  or  Dissolution.  In  the  event  of  a liquidation or
             ----------------------------
dissolution, any unexercised options will terminate. The Board of Directors may,
in its discretion, provide that the Optionee will have the right to exercise the
Optionee's  Option  as to all of the optioned stock prior to the consummation of
the  liquidation  or  dissolution.

     9.3     Change  of  Control,  Merger, Sale of Assets, Etc.  In the event of
             -------------------------------------------------
the  sale or other transfer of the outstanding shares of stock of the Company in
one  transaction  or  a  series  of  related  transactions  or  a  merger  or
reorganization  of  the  Company  with  or  into  any  other  corporation, where
immediately  following  the  transaction, those persons who were shareholders of
the  Company  immediately  before  the  transaction control less than 50% of the
voting  power  of the surviving organization (a "change of control event") or in
the  event  of a proposed sale of substantially all of the assets of the Company
(collectively, "sale transaction"), the Option shall be assumed or replaced with
a  substitute  equivalent  option.

10.  WITHHOLDINGS OF TAXES.

     The  Company  and  the  Optionee  shall  be  subject  to  Section 12 of the
Employment  Agreement  with respect to tax liabilities arising from the grant of
the  Option  or  the  issuance  of  Shares  upon  exercise  of  the  Option.

11.  MODIFICATION OF AGREEMENT.

     This  Agreement  may be modified, amended, suspended or terminated, and any
terms  or conditions may be waived, only by a written instrument executed by the
parties  hereto.

12.  SEVERABILITY.

     Should  any  provision  of  this  Agreement be held by a court of competent
jurisdiction  to  be  unenforceable  or  invalid  for  any reason, the remaining
provisions  of  this


Stock Option Agreement, Dr. Bogdan C. Maglich - Page 5
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Agreement  shall  not  be  affected  by such holdings and shall continue in full
force  in  accordance  with  their  terms.

13.  GOVERNING LAW.

     The  validity,  interpretation,  construction  and  performance  of  this
Agreement  shall  be  governed  by  the  laws of the State of California without
giving  effect  to  the  conflicts  of  laws  principles  thereof.

14.  SUCCESSORS IN INTEREST.

     This  Agreement  shall  be  binding  upon, and inure to the benefit of, the
Company  and  its successors and assigns, and upon any person acquiring, whether
by  merger,  consolidation,  reorganization,  purchase  of  stock  or assets, or
otherwise,  all or substantially all of the Company's assets and business.  This
Agreement  shall  inure  to  the  benefit  of  the  Optionee's  heirs  and legal
representatives.  All  obligations  imposed  upon  the  Optionee  and all rights
granted  to  the  Company  under  this  Agreement  shall  be  final, binding and
conclusive  upon the Optionee's heirs, executors, administrators and successors.

15.  RESOLUTION OF DISPUTES.

     Any dispute or disagreement which may arise under, or as a result of, or in
any  way  relate  to,  the  interpretation,  construction or application of this
Agreement  shall  be  determined  by the Board of Directors of the Company.  Any
determination  made  hereunder  shall  be  final,  binding and conclusive on the
Optionee  and  the  Company  for  all  purposes.


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Stock Option Agreement, Dr. Bogdan C. Maglich - Page 6
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     IN WITNESS WHEREOF, the parties have executed this Agreement effective as
of the date first above written.

                             HIENERGY TECHNOLOGIES, INC.


                             By:  /s/  Barry Alter
                                 -----------------------------------


                             Name:     Barry Alter
                                   ---------------------------------


                             Title:    President
                                    --------------------------------

     By signing below, Optionee hereby accepts the Option subject to all its
terms and provisions.


                             OPTIONEE


                             Signature:  /s/  B. C. Maglich
                                        ----------------------------


                             Name:       B. C. Maglich
                                   ---------------------------------


                               [EXHIBIT  FOLLOWS]



Stock Option Agreement, Dr. Bogdan C. Maglich - Page 7
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                                    EXHIBIT A

                              OPTION EXERCISE FORM
                              --------------------

To:  HiEnergy Technologies, Inc.

     (1)  The  undersigned hereby elects to purchase the number of shares of the
          Common  Stock of HiEnergy Technologies, Inc. (the "Company") set forth
          below,  pursuant  to the terms of the Stock Option Agreement dated May
          ____,  2002,  tendering  simultaneous full payment of the Total Option
          Exercise  Price  for  such  shares.



               Number  of  Shares:                  ________________ Shares

               Option Exercise Price Per Share:     x  $____________ per Share

               Total Option Exercise Price:         =  $____________


     (2)  In  exercising  this  Option,  the  undersigned  hereby  confirms  and
          acknowledges  that:

          a)   the  shares  of Common Stock to be issued upon exercise are being
               acquired  solely  for the account of the undersigned and not as a
               nominee  for  any  other  party;  and

          b)   the  shares  of  Common  Stock to be issued upon exercise are not
               acquired  with  a  view  toward  distribution;  and

          c)   the  undersigned  is  an  "accredited  investor"  as that term is
               defined  in  Rule 501 of Regulation D under the Securities Act of
               1933,  as amended, and as provided in the Subscription Agreement;
               and

          d)   the  undersigned will not offer, sell or otherwise dispose of any
               such  shares  of  Common  Stock  except  pursuant to an effective
               registration, or an exemption therefrom, under the Securities Act
               of  1933, as amended, together with a similar exemption under the
               securities  laws  of  all  applicable  jurisdictions;  and

          e)   the  undersigned  otherwise  reaffirms  all  representations,
               warranties,  and  indemnifications  contained in the Stock Option
               Agreement  and Subscription Agreement, including, but not limited
               to,  those  contained in Section 7 of the Stock Option Agreement;
               and


Option Exercise Form - Page 1
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          f)   the undersigned has reviewed all of Company's public filings with
               the  Securities  and  Exchange  Commission;  and

          g)   the  undersigned  consents  to  delay  the exercise of the Option
               until,  in  the Company's judgment, the Company has disclosed any
               additional  matters that need to be disclosed to the undersigned,
               beyond  those contained in the public filings with the Securities
               and  Exchange  Commission.

     (3)  Subject  to  Section  (2),  please issue a certificate or certificates
          representing  said  shares  of  Common  Stock  in  the  name  of  the
          undersigned  as  instructed.

     (4)  Please  issue a new Option for the unexercised portion of the attached
          Option  in  the  name  of  the  undersigned.



This ________ day of, ________, _____:


______________________________________
Signature


______________________________________
Print Name of Signatory


______________________________________
Name of Entity (if applicable)


Send or deliver this Form with an original signature to:

HiEnergy Technologies, Inc.
Attn:  President
10 Mauchly Drive
Irvine, CA  92618
USA


Option Exercise Form - Page 2
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