We are proud to unveil the GEN II of the Farnam Signature M4!

John Farnam, a police officer and decorated veteran of the Vietnam War, is one of the most respected firearms instructors in the world. As Director of Defense Training International, he has trained thousands of federal, state and local law enforcement agency personnel, many private security agencies, foreign governments, and hundred of civilians in safe gun handling and the tactical use of the defensive firearms. John’s extensive experience with the Stoner (M16/M4/AR-15) system and its variants has inspired him to collaborate with us here at M4 Precision to create a signature rifle that he is willing to put his name on.

We’ve dubbed it the Farnam Signature M4, or FSM4. The FSM4 comes to its new owners set up per John’s specifications and tough standards for serious rifles. Each rifle is test-fired personally by John, and is shipped ready to be put into service immediately. In order to similarly set-up an M4 per these specs, the process would consume several months. The end-product would cost over $3000, and would scarce have the same degree of fit, finish, and function of this rifle. At the introductory price of $2500.oo, the FSM4 costs a good deal less than all that, and comes to you ready to go! Some upgrades and options are available. Contact Keith for a consultation.


Precision Gunsmithing

M4 Precision, LLC offers Armorer’s Services, Custom Builds, Prototyping, and more!

Tell us what you want and we’ll build your custom bolt gun, carbine, or handgun from the ground up. With years of expertise and experience with manufacturing and machining–as well as in the firearms and training industries–we’ll offer our expertise regarding known compatibility issues and other pitfalls common to custom builds. Contact Keith to find out more about custom builds, design, engineering, and prototyping.

Retail Gun Sales

“Seek, and we will find.”

We have the contacts and resources to obtain the firearms, optics, and other accessories that you are looking for. With years of experience building custom firearms, we’ll help you get the most “bang for your buck” by taking the time to understand the intended purpose of the firearm, your personal experience, and your preferred budget.

Firearms Instruction

NRA Certified Basic Pistol, Rifle, Personal Defense in the Home, Range Safety Officer

M4 Precision, LLC offers a variety of classroom and range instruction, including NRA Basic Pistol Classes, Advanced Pistol and Rifle Courses. We also offer individual instruction for customers based on their personal firearm choice, in order to achieve a more specialized knowledge of the finer details and nuances associated with a given firearm. Prices vary. Contact Keith for a consultation.


15 + 15 =

We Respect Your Privacy
Protecting your privacy is important to us. We will NEVER sell or send your name/e-mail address to another party. Individual information, including your e-mail address, will be kept strictly confidential.

Contact Information