Build Configurator
Design Your Custom Rifle
Download your custom rifle with every spec you picked — or send the builder to a buddy.
Step by Step
How the Rifle Builder Works
01
Pick Your Series & Platform
Start by choosing one of six LSF rifle series — Sentinel, Sentry, Scout, Ranger, Trooper, or Pathfinder. Each series has a different purpose, price range, and set of available options. Then choose your platform: AR-15 or AR-10.
02
Choose Caliber & Cerakote
Select your caliber from the options available for your series and platform. Then pick a Cerakote color, toggle battleworn, and choose a pattern. The live preview updates in real time as you make each selection.
03
Send Your Build to James
On the final step, enter your name and contact information and submit your build. James receives your full configuration and will contact you with an official quote. Nothing is purchased until you approve that quote.
Why LSF
Why Build With Last Sentinel
Last Sentinel Firearms is a family-run business founded by James and Gina Ensor in 2020. We are a licensed Type 07 FFL manufacturer — meaning we are federally licensed to manufacture and sell firearms. Every rifle we build is manufactured at our facility at 145 E 4th Street in Schell City, Missouri.
Every build is test-fired before it leaves our facility. We apply Cerakote in-house. That means tighter quality control, faster turnaround, and the ability to do custom patterns and logos that most shops won't touch.
We don't publish a price list because no two builds are the same. Call us at (417) 684-7202 if you'd rather talk through your build before submitting.
Common Questions
Builder FAQ
Is the builder free to use?
Yes. The builder is completely free. You can design as many configurations as you like with no obligation.
Does submitting my build commit me to a purchase?
No. Submitting your build sends your configuration to James, who will contact you with an official quote. Nothing is purchased until you approve that quote.
How accurate is the rifle preview?
The preview is a reference illustration based on your selections. Every rifle is built and finished by hand in Schell City, Missouri, so your final rifle will vary in exact appearance.
Can I build an AR-10 in the builder?
Yes. The Sentry, Scout, Ranger, Trooper, and Pathfinder series all support the AR-10 platform. Select your series, then choose AR-10 on the platform step.
Can I get a custom pattern or logo on my rifle?
Yes. The Scout, Ranger, Trooper, and Pathfinder series support custom patterns and logos. Select a pattern on the finish step, or describe your custom design in the notes field.