ATI 5.56x45mm NATO, AR-15 Parts Kit

Item # C4KW-584157

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Non-Member $529.99 Buyer's Club $476.99
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You must be 18 years of age to purchase this item.

Shipping restrictions apply to this product under some jurisdictions. Known age, state and local shipping requirements are applied at checkout and may result in changes to an order.

This item cannot ship to Canada.

This item cannot ship internationally.

Details & Specs

You supply the lower receiver. WE supply the parts you need to finish it right. 

Fine quality, includes everything but the lower receiver. Great stuff from American Tactical Imports®, a rising star in the AR game. Add in a lower of your choice (we have a bunch to choose from), and you're ready to rock and roll.

Order yours and get started on your black rifle ASAP!

Spec Chart:

  • Mil-spec certified 4150 chrome-moly vanadium steel M4 contour barrel with 1:7" twist
  • Chambered in 5.56x45mm / .223 Remington®
  • Melonite-coated barrel
  • T-marked forged M4 upper receivers with extended M4 feed ramps
  • Picatinny gas block
  • A2 flash hider installed with Peel washer
  • M4 single heat shield handguard
  • M16 bolt carriers
  • Mil-spec fire control group with .154-diam. pins
  • Mil-spec .154-diam. hammer and trigger pins
  • Mil-spec .250-diam. take-down pins
  • Mil-spec collapsible 6-position ribbed reinforced stock
  • Kit does not come with mag. or trigger guard
  • Weighs 6 1/2 lbs.
Reviews
ATI 5.56x45mm NATO, AR-15 Parts Kit is rated 4.5 out of 5 by 34.
Rated 5 out of 5 by from Great product at a great price! soLID BUILD, QUALITY PRODDUCT. i HIGHLY RECOMMEND THIS FOR YOUR NEXT ar15 BUILD.
Date published: 2015-07-20
Rated 5 out of 5 by from Fantastic kit Kit is still in the box, I am slow at the machining part. Looks like very good kit.
Date published: 2015-05-15
Rated 5 out of 5 by from Excellent pricing I bought this to go in my emergency survival bag. So I have not used it.having been in the Military though I can say it is as described.Only wish it had optional caliber choices.
Date published: 2015-05-13
Rated 3 out of 5 by from Good price, But second set was incomplete The first kit I bought was complete. However, the second kit was missing the safety detent spring. Let me tell you. Finding a spring like that on a weekend is near impossible. You have to buy a whole spring kit to the tune of around $50.00. Just for a $3.00 spring.
Date published: 2015-04-22
Rated 5 out of 5 by from i got my product and i am so happy about it,no problem at all
Date published: 2015-04-02
Rated 5 out of 5 by from best deal around kit come exactly as described. all parts are in excellent shape and build strong. worth every penny. strongly recommended.
Date published: 2015-03-28
Rated 5 out of 5 by from New AR build All parts were of good quality and fit without any problems
Date published: 2015-03-11
Rated 5 out of 5 by from 1-2-3- Rifle First timer at this. Kit was complete. I found a UTube video and things went together real easy. I'm going to try it this weekend. Super price.. quick delivery. Wish there was a kit where I could choose between good, better, best for some of the parts.
Date published: 2015-01-09
  • 2015-07-30T08:18CST
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Q & A
<!--begin-bvseo-questions--> <!--begin-questions--> <div id="bvseo-questionsSection"> <div class="bvseo-question-answer" data-questionid="1549834"> <h2 class="bvseo-question"> Whats the length of the hand guard? </h2> <div class="bvseo-question-detail"> </div> <div class="bvseo-author">Asked by: KitD</div> <div class="bvseo-answer" data-answerid="1821653"> The hand guard is 8 inches. <div class="bvseo-author">Answered by: customer service</div> <div class="bvseo-pubdate">Date published: 2015-07-27</div> </div> </div> <div class="bvseo-question-answer" data-questionid="1546977"> <h2 class="bvseo-question"> I see that there is no trigger guard and mags as listed BUT.... I dont see the BCG (bolt carrier group) or the charging handle - being that the upper looks complete is that in there and I just cant see them?? </h2> <div class="bvseo-question-detail"> </div> <div class="bvseo-author">Asked by: KitD</div> <div class="bvseo-answer" data-answerid="1818856"> Spec Chart:Mil-spec certified 4150 chrome-moly vanadium steel M4 contour barrel with 1:7&quot; twistChambered in 5.56x45mm / .223 Remington®Melonite-coated barrelT-marked forged M4 upper receivers with extended M4 feed rampsPicatinny gas blockA2 flash hider installed with Peel washerM4 single heat shield handguardM16 bolt carriersMil-spec fire control group with .154-diam. pinsMil-spec .154-diam. hammer and trigger pinsMil-spec .250-diam. take-down pinsMil-spec collapsible 6-position ribbed reinforced stockKit does not come with mag. or trigger guardWeighs 6 1/2 lbs. <div class="bvseo-author">Answered by: Customer Service</div> <div class="bvseo-pubdate">Date published: 2015-07-27</div> </div> </div> <div class="bvseo-question-answer" data-questionid="1545149"> <h2 class="bvseo-question"> if I bought this as a gift for my dad do we both have to do back round checks? is this considered a complete firearm?thanks </h2> <div class="bvseo-question-detail"> </div> <div class="bvseo-author">Asked by: sane man</div> <div class="bvseo-answer" data-answerid="1817209"> This is only a parts kit, so it is considered an accessory. You do not need a background check to purchase accessories. <div class="bvseo-author">Answered by: Customer Service</div> <div class="bvseo-pubdate">Date published: 2015-07-20</div> </div> </div> <div class="bvseo-question-answer" data-questionid="1529475"> <h2 class="bvseo-question"> Does this upper require the large sight to fit to the gas impingement for the unit to operate? I want to install low profile sights and not the standard that have the sight picture well above the barrel. </h2> <div class="bvseo-question-detail"> </div> <div class="bvseo-author">Asked by: Cliff</div> <div class="bvseo-answer" data-answerid="1803709"> This rifle has the railed style front gas block. You do not need to attach any sights to make this rifle operate. <div class="bvseo-author">Answered by: Customer Service</div> <div class="bvseo-pubdate">Date published: 2015-07-02</div> </div> </div> <div class="bvseo-question-answer" data-questionid="1509087"> <h2 class="bvseo-question"> Is the gas system a carbine or mid-range? </h2> <div class="bvseo-question-detail"> </div> <div class="bvseo-author">Asked by: Larry</div> <div class="bvseo-answer" data-answerid="1782307"> Mid range. <div class="bvseo-author">Answered by: Steve</div> <div class="bvseo-pubdate">Date published: 2015-06-04</div> </div> </div> <div class="bvseo-question-answer" data-questionid="1499503"> <h2 class="bvseo-question"> Does this parts kit include forward assist on the upper? Does it come with a commercial or mil spec buffer tube, is a fully assembled bolt/firing pin included? Who is the manufacturer of the lower parts fire control system? </h2> <div class="bvseo-question-detail"> </div> <div class="bvseo-author">Asked by: Eagle12457N</div> <div class="bvseo-answer" data-answerid="1768344"> It does include the forward assist. The buffer tube is mil spec. The assembled bolt and firing pin is included. ATI is the manufacturer of all internal parts which are made in the USA. <div class="bvseo-author">Answered by: Customer Service</div> <div class="bvseo-pubdate">Date published: 2015-05-18</div> </div> </div> <div class="bvseo-question-answer" data-questionid="1504042"> <h2 class="bvseo-question"> does the upper arrive assembled? </h2> <div class="bvseo-question-detail"> </div> <div class="bvseo-author">Asked by: angelo</div> <div class="bvseo-answer" data-answerid="1767668"> Yes, it will come fully assembled. <div class="bvseo-author">Answered by: CUSTOMER SERVICE</div> <div class="bvseo-pubdate">Date published: 2015-05-17</div> </div> </div> <div class="bvseo-question-answer" data-questionid="1483047"> <h2 class="bvseo-question"> How do I know if this will ship to my home.  Massachusetts 02745 </h2> <div class="bvseo-question-detail"> </div> <div class="bvseo-author">Asked by: Mark</div> <div class="bvseo-answer" data-answerid="1743801"> The item is restricted from shipping to the zip code 02745. <div class="bvseo-author">Answered by: customer service</div> <div class="bvseo-pubdate">Date published: 2015-04-22</div> </div> </div> </div> <script type="text/javascript"> if (document.getElementById('bvseo-questionsSection')) { document.getElementById('bvseo-questionsSection').style.display = 'none'; } </script> <!--end-questions--> <!--begin-pagination--> <ul id="bvseo-paginationSection"> <li class="bvseo-paginationItem"><a class="bvseo-paginationLink" href="http://www.sportsmansguide.com/product/index/ati-556x45mm-nato-ar-15-parts-kit?a=1657424&bvrrp=Main_Site-en_US/questions/product/2/584157.htm">ATI 5.56x45mm NATO, AR-15 Parts Kit Questions - page 2</a></li> </ul> <!--end-pagination--><ul id="BVSEO_meta" style="display:none!important"> <li data-bvseo="bvDateModified">2015-07-30T11:08CST</li> <li data-bvseo="ps">bvseo_cps, prod_bvqa, vn_cps_3.1.5</li> <li data-bvseo="cp">cp_1, bvpage1</li> <li data-bvseo="co">co_hasquestionsanswers, tq_23</li> <li data-bvseo="cf">loc_en_US, sid_584157, PRD, sort_recentAnswersFirst</li> <li data-bvseo="diagnostics">clientName_sportmansguide</li></ul><!--end-bvseo-questions--><!--BVSEO|dz:Main_Site-en_US|sdk:v1.0.7.0-n|msg:timer 46ms -->
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