Hornady Black 5.56 NATO 75 Grain InterLock HD SBR Ammo

Overview

Hornady Black 5.56 NATO 75 Grain InterLock HD SBR ammunition is purpose-built for short-barreled rifles, delivering exceptional performance from 10.5” to 11.5” platforms. Utilizing proprietary propellant technology and an advanced InterLock HD bullet derived from Hornady’s renowned Critical Duty technology, this load is engineered to provide reliable terminal performance, consistent accuracy, reduced flash, and optimized suppressor compatibility. Whether running suppressed or unsuppressed, this ammunition is designed to meet demanding professional and defensive requirements.

Key Features

• 5.56 NATO caliber loaded with a 75 grain InterLock HD projectile
• Specifically optimized for 10.5”–11.5” short-barreled rifles
• Proprietary propellant technology for enhanced SBR performance
• Designed to minimize flash and residue during firing
• Reduced sound signature compared to conventional loads
• Suppressor-friendly design helps reduce fouling and heat buildup
• Reliable performance in suppressed and unsuppressed firearms
• FBI protocol-oriented performance design
• Consistent velocity and accuracy across various operating systems
• Made in the USA

Specifications

• Manufacturer: Hornady
• Product Line: Black
• Caliber: 5.56 NATO
• Bullet Weight: 75 Grains
• Bullet Type: InterLock HD SBR
• Test Barrel Length: 11.5”
• Muzzle Velocity: 2,321 fps
• Muzzle Energy: 897 ft-lbs

MPN: 81296
UPC: 090255812961

Applications

Ideal for defensive use, duty applications, tactical training, and short-barreled rifle platforms. This ammunition is optimized for shooters seeking dependable terminal performance, reduced flash signature, and suppressor-friendly operation in compact 5.56 NATO firearms.

Additional Features

• Engineered for direct impingement and gas piston operating systems
• Compatible with suppressed and unsuppressed platforms
• Suitable for rifle, carbine, and pistol-length configurations
• Designed to provide controllable cyclic rates in full-auto platforms
• Optimized for reliable operation across a wide variety of firearm systems