The Daniel Defense Mk 12 Gas Block, Commercial, .750 is a low-profile gas block built to the same Crane specification used on USSOCOM MK12 rifles. Precision CNC machined from hardened 416 stainless steel and finished in a black oxide coating, it is designed specifically for .750-inch barrels and delivers consistent, reliable gas regulation in a compact footprint.

This clamp-on gas block is ideal for shooters upgrading a duty rifle, competition build, or dedicated training carbine where dependable cycling is essential. Its secure screw-on attachment preserves barrel integrity while keeping weight to a manageable 1.9 oz, making it a smart choice for modern AR-15 configurations that require a clean, unobtrusive profile under a handguard. Backed by Daniel Defense’s reputation for meticulous machining and thoughtful engineering, it integrates seamlessly into premium rifle builds.

Key Features:

• Manufacturer: Daniel Defense
• Model: Mk 12 Gas Block, Commercial, .750
• Gas Block Diameter: 0.750 Inches
• Gas Block Style: Screws, Low-Profile Clamp-On
• Material: Hardened 416 Stainless Steel
• Finish Color: Black Oxide
• Weight: 1.9 oz
• Unique Features: Built to Crane specification for MK12, includes set screws, gas tube roll pin, and threadlocker