2019 Team18

Project Overview  |  Proof of Concept  |  Final Design  |  Fabrication  |  Testing and Results  |  Meet the Team  |  Acknowledgements

Project Overview

The Mossberg AR-15 Adapter is required to meet particular specifications from several entities. This section will provide the product design specifications (PDS) of the Mossberg AR-15 Adapter. These specifications will be identified when the product is with-in its intended use, user, and environment. The intended use is to adapt an AR-15 pistol grip, handguard, and buffer tube/stock. The product is intended to be used for the life of the Mossberg 702 firearm. The intended users are adults 18 years or older that own a Mossberg 702 and reside in the jurisdictions where AR platforms are legal. The intended environment is outside, exposed to all weather conditions and temperature ranges of approximately 0⁰F-120⁰F. The product will be exposed to dust, debri, oils, vibrations, and other normal conditions that firearms discharge.


Proof of Concept

Cutting Edge Firearms AR-15/702 Adapter is an aftermarket product for a Mossberg 702 Plinkster that allows for AR-15 part to be attached to the rifle. This concept is not new as similar products exist for other rifles, most notably the Ruger 10/22. In fact, there are hundreds of conversion kits and shells that exist for the Ruger, serving the same purpose as the adapter, at least functionally. This is the largest and most threatening competitor to Cutting Edge’s product. Its is indirect, as both concepts serve first as an incentive to purchase one rifle or the other, before the product itself will be purchased. A less threatening, but more closely related competitor is found in the Mossberg 715t. Essentially, a 702 inside an AR-15 styled shell. However, it is likely that Mossberg would support the adapter product, due to the incentive reasons mentioned, rather than try to compete with it.
Through the research that has been done at Cutting Edge Firearms, we believe that this product would have a strong spot in the market. The reason for this is because, semi-automatic .22 rifles are popular among beginning shooter and/or people just looking to have fun. The latter would be the most likely to modify their rifles and would inherently be looking for lower prices. With the Mossberg’s lower cost, when compared to other rifles, the existence of this adapter would provide an option to attain a higher quality package at the same or lower overall cost to the customer.

Cutting Edge Firearm has designed an adapter for a Mossberg 702, with the intention to allow AR-15 attachments to be adapted and replace the original plastic stock. In order to prove the functionality of the adapter, a stress analysis for real-world conditions was created. Using the results from the analysis, Cutting Edge proved that the adapter with all of its attachment junctions and accompanying fasteners will withstand all likely applied forces. These forces include but are not limited to, the gravitational force of the firearm’s weight applied to the center of mass, the recoil force, and any torsional forces. The proof of these concepts show that the adapter will not only withstand the conditions of its intended purpose, but also show a potential of application for other models of firearms.


Final design

The intended use of the Mossberg AR-15 Adapter is to replace the standard stock the Mossberg 702 comes equipped with and allow the use of AR-15 components including, but is not limited to, a pistol grip, buffer tube/stock, and handguard. The product can withstand normal firearm conditions which includes interaction with oils, dirt, water, and other foreign contaminants. It can withstand all reasonable amounts force and torque that may be placed on the frame. It also adheres to all applicable safety and legal standards such as: NFA Title II requirements and ANSI/ASME standards.

The intended user of the product is someone with firearm experience who is 18 years or older; or younger people with proper supervision. The target customer for the product are those who are looking to modify a semi-automatic .22 rifle for functionality or esthetics and already possess either the Mossberg 702 or the AR-15 attachments this adapter could support. While the purchasing the adapter, firearm and various attachments all together would still be competitively viable, it would lose an affordability advantage over other options. Given that the customer possesses either the Mossberg or AR-15 attachments beforehand, Cutting Edge’s adapter provides the simplest and most affordable option for modification.




Testing and Results



Meet the Team

Cody Schauer

Cody Schauer is currently studying mechanical engineering as an undergraduate at the university of Nevada, Reno. Cody has been a part of five separate engineering teams throughout the course of his academic career. In those teams he has learned various engineering skills and techniques that he can take with him in his professional career. These skills include effective communication, determination and perseverance, alongside the textbook knowledge from his college education. Of the projects that he has been a part of, the most challenging and rewarding has been the balsa wood bridge that he has his team members built during his junior year. Him and his team were required to construct a model bridge out of balsa wood to analyze the forces being put on it. After the bridge was constructed, a simulated weight was placed on the bridge and recorded how much weight the bridge could hold before it broke. As a result, Cody and his team placed third in the class for the weight/weight ratio that their bridge was able to hold. Outside of school and work, Cody is proud to have developed relationships with his family and friends that have helped him get to where he is today. Cody is from Reno, Nevada. His goals for now are to continue through college and get his degree. After college, He plans on moving somewhere else for a job to start the next part of his life.



Anton Bengard

Probably the most difficult project that Anton has been involved with in my academic carrier, while it be simplistic, I would have been ENGR 100’s hover craft project. The project itself was actually not that difficult but being his first engineering class and considering general lack of knowledge at the time, it pushed him to figure things out and learn as he went more than any other project until ME 451.

In his time studying Mechanical Engineering at UNR, Anton has studied topics such as static and dynamic mechanics, thermodynamics, manufacturing processes, and systems design. He has learned practical skills like soldering through various classes and simple coding through programs such as MATLAB. He has also recently earned my Certified Solidworks Associate certificate through ME 350.

Unfortunately, Anton has had little opportunity to work in engineering fields outside of school, though he was previously employed with a civil engineering firm known as NST Engineering, mostly in land survey work. He also has a great understanding logical thought processes and critical thinking, and extensive experience in public speaking. On these topics, Anton has taken several college level classes, received extensive informal teaching, and spent a significant amount of his personal time studying, in order to be capable of reasoning his way through an issue and presenting a strong argument.

Anton was born in British Columbia, Canada in 1994. His family moved to the United States two years later and he officially immigrated to the US in 2003 with dual citizenship. He has spent most of his life in Lassen County, California. He moved to Reno in 2014, in order to work toward his Mechanical Engineering degree. Anton’s plans for after graduation have changed several times throughout his college career. Ranging from power plant operation or design, to firearm manufacturing. Fortunately, the Mechanical Engineering profession allows for a wide range of occupational fields which Anton plans to take full advantage of.


Daniel Borden

From Reno/Sparks Nevada

One of the largest engineering accomplishments Daniel has made is designing a tool used during the manufacturing process of valves. The function of the tool was to turn the stem of the valves after assembly to wear in the inner sealing surfaces. The tool was required to be automated and turn four valves clockwise and counter clockwise for an adjustable amount of time. In addition, the tool need to be extremely simple and easy to use. To meet the requirements, it took months of research and concept development. Daniel learned about many things during this process including but not limited to, PLC programing, stepper motors, matching hardware, and general electrical components. After the final design was made, drawings came next which took extensive GD&T. Finally, when the tool was assembled, a testing procedure was created to verify it meet the functional requirements. The project ended with a success.

Daniel’s goals as of now are to graduate with at least a 3.2 GPA and have zero student loan debt. These have been his goals since he started college and they are close to coming to fruition. After graduation, Daniel hopes to get a full-time engineering position where he’s currently working as an intern at Hamilton Company. Daniel has many more goals and he’s shooting for the stars, but ultimately, he’s striving for absolute success.



Vincent Rojas

Vincent Rojas is a Mechanical Engineering student attending the University of Nevada-Reno. Originally from Las Vegas, Nevada, Vincent started his academia at the university in August of 2014 where he developed a knowledge of engineering principles by taking courses on Statics, Mechanics of Solids, Fluid Dynamics, Thermodynamics, Heat Transfer, Control Systems, the Manufacturing Process and the Design Process. Through the courses Vincent has taken at UNR, he has learned useful skills, such as soldering, CAD software, coding in Excel and MATLAB programs, advance numerical methods, and project management with multidisciplinary teams. Prior to his Capstone project the most difficult academic challenge Vincent has faced were his upper division courses. On multiple occasions Vincent has struggled and failed in classes about the 300 level. Although he has since retaken and passed these classes, the previous failures continue to hinder Vincent through his GPA. Despite his setback, Vincent is determined to correct his errors and complete his goal of graduating in of Spring 2019. After graduating, Vincent plans to apply his knowledge in the construction field where he has previously had experience with the project management aspect. Vincent has an interest in this field because he was involved in the renovation of his grandparents’ home, a task where he demonstrated his education in a useful way he could pride himself with.