The H&K MR556 A4 SBR 5.56mm 10rd Magazine 11" Threaded Barrel NFA Item brings the proven HK416 lineage to the commercial market in a compact short-barreled rifle. Built around a short-stroke gas piston system and an 11-inch threaded barrel, this MR556 A4 SBR is engineered for clean, reliable operation with reduced fouling and consistent performance.

This model features an adjustable gas regulator for fine-tuning with suppressed or unsuppressed setups, fully ambidextrous controls for versatile handling, and a slim, lightweight handguard that offers comfortable control and accessory mounting. With its 10-round magazine configuration and durable construction, it is well suited for range use, training, and enthusiasts seeking a premium AR-pattern rifle backed by Heckler & Koch’s reputation for precision and durability.

Key Features:

• Manufacturer: H&K
• Model: MR556 A4 SBR
• Caliber: 5.56mm
• Condition: New
• Action: Semi-auto
• Barrel Length: 11"
• Number of Magazines: 1
• Capacity: 10
• Threaded Barrel: Yes