directory/gunsmith
LongRifles
3570 Mayer Ave, Sturgis, SD
•LongRifles, Inc. (LRI) builds and modifies precision rifles with a focus on accuracy and reliability. Their specialty is Remington M700 and Ruger RPR platforms, but they work on Tikka T3, Winchester M70, Accuracy International, Bergara, Howa 1500, and American Rifle Company actions. LRI handles the ...
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Full description and what we offer
LongRifles, Inc. (LRI) builds and modifies precision rifles with a focus on accuracy and reliability. Their specialty is Remington M700 and Ruger RPR platforms, but they work on Tikka T3, Winchester M70, Accuracy International, Bergara, Howa 1500, and American Rifle Company actions.
LRI handles the complete build process:
- •Barrel Fitting & Chambering - Fitted to your action with custom cartridge options
- •Receiver Blueprinting - M700 receiver truing for precision and reliability
- •Bolt Work - Fluting, jeweling, skeletonizing, TIG welding, AR-15 extractor installation, striker pin bushing
- •Action Upgrades - Side bolt releases, external bolt releases, tactical bolt knobs, recoil lug retrofits
- •Threading & Brakes - Muzzle threading, crowning, and direct-fit timed brake installation
- •Finish Work - Cerakote application, glass bead finishing, parkerizing, and bolt finishing
- •Stock Work - Pillar bedding, custom inlet, 3D surface machined inletting
- •Miscellaneous - Clip slotting for M40-style bases, AIAW magazine well modification, detachable bottom metal installation
LRI designs and manufactures their own components:
| Product | Application |
|---|---|
| Billet AL Bolt Shrouds | Ruger RPR Gen I & II |
| Match Grade Drop-In Barrels | Ruger RPR, ARC Nucleus |
| Precision Recoil Lugs | M700, Tikka T3 |
| Tactical Bolt Knobs | M700, Winchester M70 |
| External Bolt Releases | M700 |
| Custom Thread Protectors | Various platforms |
| Cathedral Port Muzzle Brakes | RPR, ARC Mausingfield |
| Bedding Pillars | 1.350" diameter |
| Scope Mount Adapters | Leica, SIG Kilo 2000 |
They stock professional-grade equipment for other gunsmiths and builders:
- •Barrel spinning cassettes ("SuperDuty" series for polishing)
- •Replacement barrel spinner centers
- •Fire control disassembly tools
- •Action wrenches for RPR and Nucleus actions
- •Custom barrel blanks from K&P Barrel Company
- •Jewell Hunter/Varmint triggers (M700 clones)
- •RCBS Chargemaster velocity stack
- •Match-grade competition sizer dies (6mm)
- •Chamber gauges and tools
- •Release agents and finishing supplies
LRI partners with quality manufacturers: American Rifle Company, Ruger, K&P Barrel Company, and Jewell Triggers.
Group Buy Programs - LRI periodically offers group buy services for M700 blueprinting, barreling, fluting, and coating at package pricing.
This is a working gunsmith shop focused on precision, accuracy, and customer builds—not a retail storefront. They understand the specific demands of long-range shooters and competition builders. Whether you need a complete build, a single upgrade, or gunsmith tools for your own work, LRI handles it with attention to detail.