Briley .580" Government Drop-In Bushing & Ring – 1911 Spherical Bushing for Maximum Accuracy
Model: 580DIBRING • Diameter: .580" • Fit: 1911 Government (5" Government-Size Pistols) • Style: Drop-In Bushing & Ring • UPC: 724436143925
The Briley .580" Government Drop-In Bushing & Ring (580DIBRING) is a premium 1911 spherical barrel bushing system engineered to tighten lockup, reduce barrel spring, and improve on-target accuracy in full-size Government 1911 pistols—without the hassle of extensive gunsmith fitting. Sized for .580" 1911 barrels and built with Briley’s proven spherical ring technology, it delivers “maximum accuracy, drop-in convenience” for shooters who want a closer-fitting bushing setup that still runs reliably in real-world conditions.
What Makes the Briley Spherical Bushing Different?
Unlike a standard solid bushing, the Briley spherical system uses a separate, ultra-hard internal ring that pivots inside the precision-machined bushing body:
The spherical inner ring rocks in a matching spherical recess inside the bushing, allowing the barrel to tilt smoothly as it locks and unlocks while still maintaining a tight fit.
This design “absolutely prevents barrel spring” (binding as the barrel moves through its arc), which can hurt accuracy and cause uneven wear in conventional tight bushings.
The result is one of the closest-fitting, longest-wearing barrel bushing setups available for the 1911 platform, delivering match-grade lockup with real-world reliability.
If you want to tighten your 1911’s groups without compromising function, this is exactly what the Briley ball bushing was designed to do.
Drop-In Government-Size Fit – No OD Fitting Required
This specific model is the “.580" Government Drop-In Bushing & Ring”, tuned for common Government-size 1911 barrels:
Brownells lists the diameter as 0.5800" and the fit as 1911 Government, confirming it’s built for full-size 5" pistols using barrels around that OD.
It’s a drop-in bushing style, so there’s no need to turn the outside diameter of the bushing to fit most slides—unlike Briley’s oversized versions that require lathe fitting.
Briley’s selection method calls for rings sized .001" over your barrel’s OD, giving a snug but functional fit between ring and barrel for repeatable lockup.
This makes the .580" Government drop-in set a great choice for shooters who want a precision upgrade but don’t necessarily want to do—or pay for—full custom fitting work.
Premium Materials – 17-4 Stainless, Stressproof / Fatigue-Proof Steel & TiN
The Briley 1911 spherical bushing system is built from high-end materials chosen for strength, wear resistance, and smooth operation:
Bushing: Made from 17-4 stainless steel, providing excellent strength, corrosion resistance, and long service life inside the slide.
Ring: Machined from STRESSPROOF® or FATIGUE-PROOF® carbon steel and then coated with Titanium Nitride (TiN) to dramatically increase surface hardness and lubricity.
TiN coating brings the ring surface hardness to approximately Rc 60, helping it resist peening and wear even with tight lockup and frequent shooting.
Together, these materials ensure a durable, low-friction interface between barrel, ring, and bushing—key to the Briley system’s reputation for longevity and smooth cycling.
Accuracy & Reliability Benefits for Your 1911
Upgrading to the Briley .580" Government Drop-In Bushing & Ring offers noticeable performance gains on a quality 1911:
Improved mechanical accuracy from a closer, more consistent barrel-to-bushing fit, helping to tighten groups when paired with a good barrel and slide fit.
Reduced barrel spring/binding, so the barrel can lock and unlock through its normal arc without fighting a too-tight solid bushing.
Longer service life compared to traditional “hard-fit” bushings, thanks to the TiN-coated spherical ring doing the critical wear work instead of the slide or barrel.
Maintains reliability under fouling and heat, which is crucial for defensive pistols, duty guns, and high-round-count competition rigs.
Whether you’re chasing tighter groups at 25 yards or just want your favorite 1911 to shoot to its potential, this bushing and ring set is a proven upgrade.
Easy Installation & Maintenance
Although any barrel/bushing work is best done carefully (or by a gunsmith), Briley designed this kit with user-friendly installation and service in mind:
Being a drop-in Government model, the bushing’s outer dimensions are sized to fit properly in correctly spec’d Government slides with minimal or no fitting.
Ring removal and insertion instructions are included, so you can maintain, inspect, or replace the spherical ring when needed.
Compatible with common bushing wrenches (sold separately), making removal from the slide straightforward even with snug fits.
For many shooters, it’s a drop-in upgrade; for others, a gunsmith can fine-tune the setup for absolute best results.
Ideal Use Cases
The Briley .580" Government Drop-In Bushing & Ring 580DIBRING is ideal for:
Accuracy-oriented 1911 builds where you want to tighten up groups without making the gun finicky.
Range and competition pistols that see high round counts and benefit from a long-wearing, low-friction bushing system.
Defensive or duty 1911s where improved lockup and consistency are desired but reliability must remain uncompromised.
Custom 1911 projects based on Government frames where a spherical bushing is part of a complete accuracy package.
If your full-size 1911 barrel measures around .580" at the muzzle, this drop-in Briley kit is a strong contender for squeezing more performance out of a classic platform.
Key Specs – Briley .580" Government Drop-In Bushing & Ring (580DIBRING)
Based on manufacturer and major dealer listings:
Brand: Briley
Product Type: 1911 Spherical Barrel Bushing & Ring
Model / MFR #: 580DIBRING
Brownells SKU: 129100580
UPC: 724436143925
Fit: Full-size 1911 Government models
Style: Government Drop-In Bushing & Ring
Bushing Diameter (ID / barrel size): .580"
Bushing Material: 17-4 stainless steel
Ring Material: STRESSPROOF® or FATIGUE-PROOF® carbon steel, TiN coated to approx. Rc 60
Selection: Ring sized approx. .001" over barrel OD for snug fit
Category: Handgun parts – 1911 spherical bushing
Always measure your barrel OD and verify compatibility with your specific 1911 slide and barrel combo, and follow safe gunsmithing practices during installation.
SEO-Focused Summary
The Briley .580'' Government Drop-In Bushing & Ring 580DIBRING (UPC 724436143925) is a premium 1911 spherical barrel bushing designed for full-size Government 1911 pistols with .580" barrels. Featuring a precision 17-4 stainless steel bushing, a TiN-coated spherical ring made from STRESSPROOF/FATIGUE-PROOF steel, and a drop-in Government fit, this Briley 1911 bushing and ring kit greatly reduces barrel spring, tightens lockup, and enhances mechanical accuracy while maintaining reliability. With easy installation, included ring service instructions, and proven long-term durability, the Briley .580 Government Drop-In Bushing & Ring is an outstanding upgrade for custom, competition, and defensive 1911 builds seeking maximum accuracy and smooth operation.
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