DESCRIPTION
The HK MR556 A4 5.56 NATO Semi-Automatic Pistol delivers legendary Heckler & Koch performance in a premium AR-platform pistol. Closely based on the renowned HK416, the MR556 A4 features HK's proprietary short-stroke gas piston operating system for exceptional reliability, cleaner operation, and smoother shooting than traditional direct impingement systems. Equipped with an 11-inch German cold hammer-forged barrel, slim M-LOK handguard, and fully ambidextrous controls, the MR556 A4 is built for shooters who demand uncompromising performance and durability.
Key Features:
HK416-Inspired Design: Civilian-legal platform closely modeled after the legendary HK416.
Short-Stroke Gas Piston System: Runs cleaner and more reliably by keeping carbon fouling out of the receiver.
German Cold Hammer-Forged Barrel: Heavy-profile barrel delivers exceptional accuracy, durability, and extended barrel life.
11-Inch Barrel: Compact configuration offers excellent maneuverability without sacrificing performance.
M-LOK Handguard: Slim free-float handguard provides ample space for mounting accessories.
Ambidextrous Controls: Ambidextrous safety selector accommodates both right- and left-handed shooters.
Over-the-Beach Buffer Tube: Features drainage ports for enhanced reliability in harsh environments.
Reinforced Castle Nut: Double-length castle nut increases durability under demanding use.
30-Round Magazine: Ships with one 30-round magazine for dependable capacity.
Specifications:
Manufacturer: Heckler & Koch
Model: MR556 A4
SKU: 81001050-HK
UPC: 642230269439
MPN: 81001050
Caliber: 5.56 NATO / 5.56×45mm NATO
Action: Semi-Automatic, Short-Stroke Gas Piston
Barrel Length: 11 in
Barrel Construction: German Cold Hammer Forged, Heavy Profile
Barrel Thread Pitch: 1/2x28
Finish: Black
Handguard: Slim Free-Float M-LOK
Grip: AR-Style Grip
Magazine Capacity: 30 Rounds
Magazines Included: 1
Safety: Ambidextrous AR Selector
Operating System: HK Proprietary Short-Stroke Gas Piston
Product Type: Semi-Automatic Pistol
Why Buy from Fort Thompson Sporting Goods:
Get premium HK firearms backed by knowledgeable service and a carefully selected inventory trusted by enthusiasts and professional shooters alike.
Available now at Fort Thompson Sporting Goods!
