Heckler Koch HK MR556 A4 16" TB MLOK Gas Piston 5.56 AR15 New MR556A4

New in box Heckler Koch MR556 A4 16" threaded barrel in 5.56! Comes factory new in box, with HK soft case, manual, lock and 30rd magazine!

The MR556 A4 short-stroke gas piston operating system does not impart hot carbon fouling back into the action, allowing the weapon to run longer, with less maintenance and with less wear on internal components. Its adjustable gas regulator allows the operator to tune the action specifically for suppressed or unsuppressed operation. Fully ambidextrous controls, lighter weight and a slimmer profile make the new A4 easier to operate, manipulate and employ.

Items available for in store purchase/pick up as well during business hours to AZ residents. X-Werks com

Please allow 3-5 business days for coatings & items to ship once payment and FFL are received.

FFL's can be emailed, or mailed to us. Please reference your name and the item number to prevent any delays in shipping.

Long guns and accessories ship UPS Ground. Handguns are shipped USPS priority mail.

Once payment and FFL are received we will email you a tracking/delivery confirmation number.

NO CREDIT CARD FEES!

Serial numbers & markings will vary.