WILSON COMBAT TR-LPGB-M AR15 LO-PROFILE GAS BLOCK (MEDIUM)

The Wilson Combat Lo-Profile Gas Block Medium (TR-LPGB-M) is a precision-machined AR-15 and AR-10 compatible gas block bored to .875 inch inside diameter, built from hardened chromoly steel with a black nitride finish for builders and gunsmiths who need a reliable, low-profile gas system that clears free-floating handguards without compromise.

Key Features

• Manufacturer part number: TR-LPGB-M
• UPC: 811826027887
• Inside diameter: .875 inch
• Material: 4140 hardened chromoly steel
• Finish: Black nitride, corrosion resistant
• Overall length: .920 inches
• Set screw spacing: .400 inches
• Mounting system: Hardened set screws, included
• Gas tube roll pin: Included
• Compatible platforms: AR-15, AR-10
• Caliber compatibility: Universal

Special Features

• The Wilson Combat Lo-Profile Gas Block (TR-LPGB-M) is precision bored to exactly .875 inch inside diameter, matching medium-profile AR barrels used across a wide range of Wilson Combat and aftermarket builds where a .750 block is too small and a larger block would not seat correctly
• The 4140 hardened chromoly steel construction is significantly more durable than mild steel alternatives, allowing this block to handle sustained high-pressure gas cycling over high round counts without deforming, loosening, or leaking at the port
• The black nitride finish penetrates into the steel surface rather than sitting on top of it, providing corrosion resistance and a hard wearing exterior that holds up to heat, solvent exposure, and field conditions better than a standard phosphate or parkerized coating
• The low-profile design sits below the bore line of most free-floating handguard systems, allowing builders to run full-length rails and handguards over the gas block without requiring any modification to the rail or the block
• Set screw spacing of .400 inches and the inclusion of hardened set screws means the block locks positively to the barrel journal without walking or rotating under sustained fire, keeping the gas port aligned with the barrel port through extended use

Practical Benefits

• Builders running medium-profile or government-profile AR barrels with a .875 inch gas block journal will find the Wilson Combat Lo-Profile Gas Block (TR-LPGB-M) is a direct drop-in solution that requires no machining, fitting, or modification to install
• The included gas tube roll pin and hardened set screws mean the block ships ready to install with everything needed, eliminating the need to source hardware separately before a build can proceed
• The .920-inch body length keeps the block compact enough to clear the opening of most popular free-floating handguard systems without interference, making it a practical choice for slimline and mid-diameter rail builds
• Custom AR builders, gunsmiths assembling rifles for customers, and serious home builders who want a proven name behind their gas system will find this block performs at a level consistent with Wilson Combat complete rifles
• The black nitride finish matches the exterior finish of Wilson Combat barrels and most aftermarket components, giving a custom build a consistent and professional appearance across components

The Wilson Combat Lo-Profile Gas Block Medium (TR-LPGB-M) is a capable tool for AR-15 and AR-10 builders, gunsmiths, and competition shooters looking for a precision-fitted, durable gas block that installs cleanly under a free-floating handguard and delivers consistent function across a wide range of loads and barrel profiles.