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At Rock River Tactical, we specialize in transforming standard Modern Sporting Rifles (MSRs) like the AR-15 and AK-47 as well as magazine-fed tactical pistols into precision tools customized for your mission, sport, or defense needs. As a Veteran-Owned FFL Gunsmith in Southern Wisconsin, we provide the technical expertise and attention to detail that only comes from real-world experience.
Don't trust your high-value optics and critical components to guesswork. We use professional-grade tools and industry best practices to ensure every upgrade enhances performance, reliability, and safety.

We properly lap rings, ensure correct eye relief, and use manufacturer-specified torque for a reliable, repeatable setup, utilizing quality tools.

Installation of aftermarket high-performance drop-in and two-stage triggers. We verify fit and function for a crisp, safe trigger pull.

Professional installation and timing of flash hiders, compensators, and muzzle brakes - including suppressor mounts that require precise timing for optimal performance.

Your optic will be professionally bore-sighted, drastically reducing the number of rounds needed for final zeroing.

Installation of new stocks, adjustable braces, pistol grips, and specialized charging handles for improved control and comfort.

Seamless installation of Picatinny, free-float M-LOK, or KeyMod handguards to improve accuracy and accessory attachment.

We verify that cartridges are properly seated and that the firing mechanism engages only when fully locked, eliminating the risks of case ruptures or out-of-battery discharges.

Comprehensive diagnostics for direct impingement systems to resolve issues like short-cycling, over-gassing, or failure to extract.

By precisely matching buffer weights, spring tensions, and gas flow, we "tune out" the harshness of your rifle, ensuring a smoother action and improved longevity of internal parts.

Standard Breakdown: Disassembly to the field-strip level (as recommended by the manufacturer).
Carbon Removal: Thorough cleaning of the barrel, bolt/slide, and receiver.
Inspection: Visual check for signs of excessive wear or potential part failure.
Lubrication: Professional application of high-grade lubricants to critical friction points.
Reassembly & Function Check: Ensuring your firearm is ready for immediate use.

Complete Detail Strip: Full disassembly of the firearm down to individual pins, springs, and components.
Ultrasonic/Deep Solvent Bath: Specialized cleaning to remove carbon, lead, and copper fouling from hard-to-reach internal channels.
Component Scrub: Hand-cleaning of every individual part, including the trigger group and firing pin assembly.
Advanced Inspection: A comprehensive "health check" of all springs and small parts for tension and integrity.
Preservation Treatment: Application of long-term corrosion inhibitors and precision lubrication.
Final Testing: Full reassembly and multi-point function test.