Terms and Conditions


All users of this site agree that access to and use of this site are subject to the following terms and conditions and other applicable law. If you do not agree to these terms and conditions, please do not use this site.
Thank You


All notices from MAS Defense to You may be posted on our Web site and will be deemed delivered within thirty (30) days after posting. Notices from You to MAS Defense shall be sent by certified mail to our address at: 8334 Pineville Matthews Road Suite 103 #254 Charlotte, NC 28226. Delivery shall be deemed to have been made by You to MAS Defense five (5) days after the date received.


The entire content included in this site, including but not limited to text, graphics or code is copyrighted as a collective work under the United States and other copyright laws, and is the property of MAS Defense LLC. The collective work includes works that are licensed to MAS Defense LLC. Copyright 2013 through current year, MAS Defense LLC ALL RIGHTS RESERVED. Permission is granted to electronically copy and print hard copy portions of this site for the sole purpose of placing an order with MAS Defense LLC or purchasing MAS Defense LLC products. You may display and, subject to any expressly stated restrictions or limitations relating to specific material, download or print portions of the material from the different areas of the site solely for your own non-commercial use, or to place an order with MAS Defense LLC or to purchase MAS Defense LLC products. Any other use, including but not limited to the reproduction, distribution, display or transmission of the content of this site is strictly prohibited, unless authorized by MAS Defense LLC. You further agree not to change or delete any proprietary notices from materials downloaded from the site.


All brand, product, service, and process names appearing on this Web site are trademarks of their respective holders. Reference to or use of a product, service, or process does not imply recommendation, approval, affiliation, or sponsorship of that product, service, or process by MAS Defense. Nothing contained herein shall be construed as conferring by implication, estoppel, or otherwise any license or right under any patent, copyright, trademark, or other intellectual property right of MAS Defense or any third party, except as expressly granted herein.

“GLOCK” is a federally registered trademark of GLOCK, Inc. and is one of many trademarks owned by GLOCK, Inc. and GLOCK Ges.m.b.H. Neither MAS Defense LLC nor this site are affiliated in any manner with, or otherwise endorsed by, GLOCK, Inc. or GLOCK Ges.m.b.H. The use of “GLOCK” on this page is merely to advertise the sale of GLOCK pistols, parts, or components. For additional genuine GLOCK, Inc. and GLOCK Ges.m.b.H products and parts visit www.glock.com.


This site may contain other proprietary notices and copyright information, the terms of which must be observed and followed. Information on this site may contain technical inaccuracies or typographical errors. Information, including product pricing and availability, may be changed or updated without notice. MAS Defense and its subsidiaries reserve the right to refuse service, terminate accounts, and/or cancel orders in its discretion, including, without limitation, if MAS Defense believes that customer conduct violates applicable law or is harmful to the interests of MAS Defense and its subsidiaries.


MAS Defense LLC does not and cannot review all communications and materials posted to or created by users accessing the site, and is not in any manner responsible for the content of these communications and materials. You acknowledge that by providing you with the ability to view and distribute user-generated content on the site, MAS Defense LLC is merely acting as a passive conduit for such distribution and is not undertaking any obligation or liability relating to any contents or activities on the site. However, MAS Defense LLC reserves the right to block or remove communications or materials that it determines to be (a) abusive, defamatory, or obscene, (b) fraudulent, deceptive, or misleading, (c) in violation of a copyright, trademark or; other intellectual property right of another or (d) offensive or otherwise unacceptable to MAS Defense LLC in its sole discretion.


By viewing our website and purchasing a product(s) you agree to the following conditions: By making a purchase of ANY part on our site I, the purchaser, confirm I am 18 years of age or older. Some states require you, the purchaser, to be 21 years of age or older to own a pistol, rifle, or semi-automatic firearm. I agree I am 21 years of age or older if my shipping address is in one of these states. I agree that it is my responsibility to know and understand your city, county state and federal laws by making a purchase. I have not been found guilty of any felonies and am not a felon. I understand that it is my responsibility as the buyer not MAS Defense to ascertain, and obey all applicable local, state, federal and international laws regarding the possession and use of any item on this site. I agree to indemnify and hold harmless MAS Defense and its officers, owners, and employees, from and against all liabilities, damages, penalties, claims, or other obligations arising out of my use and or ownership of any products sold by MAS Defense. MAS Defense strongly urges all buyers to contact their local FFL and/or the ATF for clarification on the law BEFORE your purchase.

New York - Absolutely NO SALES of ANY PARTS to the Bronx, Brooklyn, Long Island, Manhattan, New York City, Staten Island, Queens or any neighborhood located in these cities or boroughs.


You agree to indemnify, defend, and hold harmless MAS Defense LLC, its officers, directors, employees, agents, licensors and suppliers (collectively the "Service Providers") from and against all losses, expenses, damages and costs, including reasonable attorneys' fees, resulting from any violation of these terms and conditions or any activity related to your account (including negligent or wrongful conduct) by you or any other person accessing the site using your Internet account.


MAS Defense respects your privacy. Therefore we never share or sell your personal information with any third parties. Any information collected through this site is intended to be used for this transaction only. Your personal information is secured with a 256-bit SSL (secure socket layer) encryption, the highest standard in internet security.


MAS Defense LLC shall not be liable for any special or consequential damages that result from the use of, or the inability to use, the materials on this site or the performance of the products, even if MAS Defense LLC has been advised of the possibility of such damages. Applicable law may not allow the limitation of exclusion of liability or incidental or consequential damages, so the above limitation or exclusion may not apply to you.


In the event that a MAS Defense LLC product is mistakenly listed at an incorrect price, MAS Defense LLC reserves the right to refuse or cancel any orders placed for product listed at the incorrect price. MAS Defense LLC reserves the right to refuse or cancel any such orders whether or not the order has been confirmed and your credit card charged. If your credit card has already been charged for the purchase and your order is cancelled, MAS Defense LLC shall issue a credit to your credit card account in the amount of the incorrect price.


These terms and conditions are applicable to you upon your accessing the site and/or completing the registration or shopping process. These terms and conditions, or any part of them, may be terminated by MAS Defense LLC without notice at any time, for any reason. The provisions relating to Copyrights, Trademark, Disclaimer, Limitation of Liability, Indemnification and Miscellaneous, shall survive any termination.


Currently, MAS Defense ships merchandise to locations within the United States, including Alaska and Hawaii. We do not ship outside of the 50 US States. All packages are shipped "FOB origin" / "FOB shipping point". MAS Defense has no control over the shipping carrier with regards to delivery time frames, damaged, lost, or stolen merchandise. By purchasing "Flat Rate" shipping, you agree to release MAS Defense from all responsibility and liability of purchased merchandise with regards to damage, loss, theft etc. once said merchandise has been placed with the designated shipping carrier. If "Carrier" shipping is purchased, it is your responsibility to contact MAS Defense to file a claim if your package is damaged, lost or stolen while in transit. Your package will not be covered by insurance if the tracking number shows it has been delivered. If your package is lost, it may take up to 7 business days from the shipping date to file a claim. A "Lost Package" form will be submitted to the appropriate carrier. It may be necessary for the buyer to also open a case with the carrier. Packages over $200 will be sent signature required. We reserve the right to send any package signature required, direct or adult signature required at our discretion. 


MAS Defense does NOT ship merchandise to locations outside of the United States.


You may purchase merchandise from this Web site by using any one of the payment options listed in (link to Payment Options). MAS Defense LLC reserves the right to change its payment procedures at any time without prior notice to you.


MAS Defense charges sales tax for merchandise ordered on this web site based on thresholds provided by each state. Once the threshold has been met, applicable state sales tax will be applied.


Orders cannot be modified after "Processing" has started. Barreled uppers are built to order using the parts you select. Due to system limitations, they cannot be modified after the order has been placed. Please contact us BEFORE you place a order to discuss any questions you have about fitment or general use of a product.


Due to increased fraudulent activity, orders with different billing and shipping addresses, different credit card names vs shipping name, or over $500.00 may be required to submit a copy of their driver's license to confirm their identity. Once confirmed, customers will NOT have to resubmit on future orders if they are registered with our site and use the same log-in. You must manually accept this policy on the last page of your checkout. Please, do not check this box if you are unwilling to send your ID. A 15% cancellation fee will apply if you do not follow this policy. MAS Defense reserves the right at our discretion to request a copy of any customer's driver's license to confirm their identity. We apologize for the inconvenience.


A. Cancellation of any order after it has reached the "Processing" status but before the item(s) has shipped will be subject to a 7% cancellation fee. This fee is charged to cover the credit card merchant fees to process and refund the transaction. 

B. Cancellation of any product for failure to follow notices on products with age requirements, matching billing and shipping addresses, an outline of states or cities that we cannot ship to etc. will result in a 15% cancellation fee. 

C. Cancellation of any barreled upper after the order has been placed but before it has shipped will be subject to a 15% cancellation fee. Please contact us BEFORE you place a order to discuss any questions you have about fitment or general use of a product.


1. Please contact us within 72 hours of receiving a item with any issues that you would like to discuss. All returns must be in "NEW" condition with retail packaging if applicable, never mounted or used in any way. All returns MUST include the MAS Defense LLC issued RMA #. Returns must be shipped to 658 Griffith Road Suite 111 Charlotte, NC 28217 with a tracking number. We are not responsible for items that are lost in transit. All parts returned will be subject to a 15% restocking fee and shipping charges will not be refunded. If items are returned with any damage or signs of use, they will be returned to the customer. Ordering the wrong part, changing your mind or not knowing the law does not constitute a valid return. 2. All Barreled Uppers are built to order using our (50) point process. They are built using the options you select which include the default options. Every barreled upper is test fired before it leaves our facility. For these reasons, barreled uppers are NOT returnable items. If there is a issue after receiving a barreled upper, we will troubleshoot via phone and/or e-mail and if necessary get the upper back for inspection. 3. If you received a part other than what is listed on your invoice we will issue an RMA and postage label to get the incorrect part back. The incorrect part must be received by MAS Defense before the correct part can be sent out. 4. Items marked "cannot be returned for any reason", "these items are not returnable" or any similar statement listed in the product description are not returnable. By purchasing these items you agree to this condition.


The Content included in this Web site has been compiled from a variety of sources and is subject to change without notice as are any products, programs, offerings, or technical information described in this Web site. MAS Defense makes no representation or warranty whatsoever regarding the completeness, quality, or adequacy of the Web site or Content, or the suitability, functionality, or operation of this Web site or its Content. By using this Web site, you assume the risk that the Content on this Web site may be inaccurate, incomplete, offensive, or may not meet your needs and requirements. MAS DEFENSE SPECIFICALLY DISCLAIMS ALL WARRANTIES, EXPRESS OR IMPLIED, INCLUDING WITHOUT LIMITATION THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, AND NON-INFRINGEMENT WITH RESPECT TO THESE WEB PAGES AND CONTENT. IN NO EVENT WILL MAS Defense BE LIABLE FOR ANY SPECIAL, INDIRECT, INCIDENTAL, OR CONSEQUENTIAL DAMAGES EVEN IF COMPANY HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES.

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The information and content on this server is provided "as is" with no warranty of any kind, either express or implied, including but not limited to the implied warranties of merchantability, fitness for a particular purpose, and non-infringement. Any warranty that is provided in connection with any of the products and services described on this Web site is provided by the advertiser or manufacturer only, and not by MAS Defense.

The references and descriptions of products or services within the Web site materials are provided "as is" without any warranty of any kind, either express or implied. MAS Defense is not liable for any damages, including any consequential damages, of any kind that may result to the user from the use of the materials on this Web site or of any of the products or services described hereon.

The descriptions of, and references to, products, services and companies on this Web site are the sole responsibility of the companies providing the information ("advertisers"), and not MAS Defense.

The inclusion of material on this server does not imply any endorsement by MAS Defense, which makes no warranty of any kind with respect to the subject matter of the server materials advertised.

A possibility exists that the server materials could include inaccuracies or errors. Additionally, a possibility exists that unauthorized additions, deletions, and alterations could be made by third parties to the server materials. Although MAS Defense tries to ensure the integrity and the accurateness of the server materials, it makes no guarantees about their correctness or accuracy. Before relying on any representation made in any of the server materials, check with the advertiser of the product or service to ensure that the information you are relying upon is correct.


Although the information on this Web site is accessible worldwide, not all products or services discussed in this Web site are available to all persons or in all geographic locations or jurisdictions. MAS Defense and the advertisers each reserve the right to limit the provision of their products or services to any person, geographic area, or jurisdiction they so desire and to limit the quantities of any products or services that they provide. Any offer for any product or service made in the materials on this Web site is void where prohibited.


The use of steel case, reloaded or re-manufactured ammunition voids any and all warranties on all parts sold by MAS Defense. The use of ammunition prohibited by the manufacturer of the ammunition (example: 9MM ammo that the manufacturer has specifically stated should not be used in carbine style (PCC) weapons) voids any and all warranties. The use of ammunition that has been produced exceeding the industry standard pressure, +P, ++P, +++P or designated "hot" loads voids any and all warranties. MAS Defense will not be held responsible or liable for any damages and/or injuries incurred by use of any of these or other similar types of ammunition. Please contact us if you have a question about what ammunition to use.


The Terms and Conditions constitute the entire agreement between you and MAS Defense with respect to this Web site. The Terms and Conditions supersede all prior or contemporaneous communications and proposals, whether electronic, oral or written between you and MAS Defense with respect to this Web site. No modification of the Terms and Conditions shall be effective unless it is authorized by MAS Defense. If any provision of the Terms and Conditions is found to be contrary to law, then such provision(s) shall be constructed in a manner to closely reflect, as much as possible, the intentions of the parties, with the other provisions remaining in full force and effect.


In the event of litigation, both parties agree that the Law of the State of business registration of MAS Defense; Mecklenburg County, North Carolina shall apply and both parties shall consent to the jurisdiction of said State's courts, or in the event of diversity of citizenship, the United States District Court for the (District). Both parties expressly waive a trial by jury.