
Availability: In Stock
The Otis B.O.N.E. Tool carbon scraper for AR-10/LR-308 rifles is purpose-built to tackle the fouling that accumulates where it matters most—inside your bolt carrier assembly. If you run a .308 or 7.62 rifle hard, you know carbon buildup in the bolt, carrier, and firing pin area can lead to reliability issues downrange. This compact cleaning accessory targets exactly those surfaces, scraping away the stubborn residue that standard bore brushes can't reach. It's the kind of focused maintenance tool that keeps a precision rifle running clean between deep cleanings.
The B.O.N.E. Tool handles four critical areas: the bolt face, bolt carrier interior, firing pin channel, and surrounding contact surfaces. Unlike a multi-purpose scraper that compromises on design, this tool was engineered specifically for the geometry of .308 and 7.62 platforms. An integrated 8-32 threaded hole lets you mount it to a T-handle or rod for better control and leverage—a small detail that makes a real difference when you're working inside a tight bolt group.
Keep in mind that bolt manufacturing tolerances vary across different makers, so fit will be slightly different rifle to rifle; in most cases it works flawlessly, but some bolts may require a lighter touch. It's the trade-off of a specialized tool—made for AR-10s and LR-308s, it's not a universal fit. If you're serious about keeping your rifle's internals clean and functioning reliably, this is the dedicated scraper that belongs in your cleaning kit.
The tool is engineered for AR-10 and LR-308 bolts and performs flawlessly on most. However, manufacturing tolerances vary between bolt makers, so fit may vary slightly from rifle to rifle. It should work well on most platforms, though some bolts may fit better than others.
The B.O.N.E. Tool scrapes carbon and fouling from the bolt face, bolt carrier interior, firing pin, and the surrounding areas where buildup typically occurs.
The tool includes an 8-32 threaded hole, allowing you to attach it to a T-handle or cleaning rod for better control and leverage when scraping out carbon.
It's designed for AR-10 and LR-308 rifles chambered in .308 and 7.62. It's not a universal scraper—it's purpose-built for these platforms.

SKU: 115700918 • Width: 4.75in • Height: 1.25in • Depth: 5.5in • Weight: 0.25oz





Availability: In Stock
The Otis B.O.N.E. Tool carbon scraper for AR-10/LR-308 rifles is purpose-built to tackle the fouling that accumulates where it matters most—inside your bolt carrier assembly. If you run a .308 or 7.62 rifle hard, you know carbon buildup in the bolt, carrier, and firing pin area can lead to reliability issues downrange. This compact cleaning accessory targets exactly those surfaces, scraping away the stubborn residue that standard bore brushes can't reach. It's the kind of focused maintenance tool that keeps a precision rifle running clean between deep cleanings.
The B.O.N.E. Tool handles four critical areas: the bolt face, bolt carrier interior, firing pin channel, and surrounding contact surfaces. Unlike a multi-purpose scraper that compromises on design, this tool was engineered specifically for the geometry of .308 and 7.62 platforms. An integrated 8-32 threaded hole lets you mount it to a T-handle or rod for better control and leverage—a small detail that makes a real difference when you're working inside a tight bolt group.
Keep in mind that bolt manufacturing tolerances vary across different makers, so fit will be slightly different rifle to rifle; in most cases it works flawlessly, but some bolts may require a lighter touch. It's the trade-off of a specialized tool—made for AR-10s and LR-308s, it's not a universal fit. If you're serious about keeping your rifle's internals clean and functioning reliably, this is the dedicated scraper that belongs in your cleaning kit.
The tool is engineered for AR-10 and LR-308 bolts and performs flawlessly on most. However, manufacturing tolerances vary between bolt makers, so fit may vary slightly from rifle to rifle. It should work well on most platforms, though some bolts may fit better than others.
The B.O.N.E. Tool scrapes carbon and fouling from the bolt face, bolt carrier interior, firing pin, and the surrounding areas where buildup typically occurs.
The tool includes an 8-32 threaded hole, allowing you to attach it to a T-handle or cleaning rod for better control and leverage when scraping out carbon.
It's designed for AR-10 and LR-308 rifles chambered in .308 and 7.62. It's not a universal scraper—it's purpose-built for these platforms.
SKU: 115700918 • Width: 4.75in • Height: 1.25in • Depth: 5.5in • Weight: 0.25oz
