Items Available For Purchase Today Object reference not set to an instance of an object. See All Heckler & Koch MR556-A1 5.56mm 16.5" 30+1 M-Lok 81000579 NIB AR AR15 M4 5.56 MR556 For Sale from: Cornerstone Arms ( FFL) | Positive feedback: 99% View | Verified Seller | 2893 Completed Sales View Sellers Items Heckler & Koch MR556-A1 5.56mm 16.5" 30+1 M-Lok 81000579 NIB AR AR15 M4 5.56 MR556 For Sale from: Cornerstone Arms | Positive feedback: 99% View | Verified Seller | 2893 Completed Sales View Sellers Items Cornerstone Arms Seller Since: Jan. 2012 Identity Verified ( Colorado Springs, CO ) Trusted Seller This seller is an FFL City: Colorado Springs State: CO SOLD - $3,049.99 Shipping: $29.99 (or Arrange local transfer) Accepted Payment Methods: Returns: 3 Days This Seller Accepts Instant Online Payments Description: NO Credit Card Fees Like the Other Guys!! Read Their Fine Print!! This Listing is for One Factory Brand New in the Box Heckler & Koch MR556-A1 5.56mm Semi-Auto AR-15 Rifle. Factory Part # 81000579 Item #: 81000579 UPC: Brand: Heckler & Koch Model: MR556A1 Optics Ready Type: Rifle: Semi-Auto Caliber: 5.56 NATO Finish: Black Action: Semi-Automatic Stock: Black Synthetic, Adjustable, M-LOK Handguard Sight: No Sights Barrel Length: 16.5" Overall Length: 37.68" Weight: 8.60 lbs Capacity: 30+1 # of Mags: 1 Safety: Ambidextrous Safety Lever Receiver: Picatinny Rail on Upper Muzzle: Flash Hider Features: Gas Piston Operating System; Free Floating 4 Quadrant Rail Condition: New In Box Brand: HECKLER & KOCH USA Model: 81000579 Caliber: 5.56x45 mm NATO Item #: 981731213 UPC: 642230262553 Location: CO Trades Accepted: No Share: Shipping Notes: We do not ship/sell to Washington D.C. Or anywhere else where it is not legal to own this firearm. It is your responsibility to ensure that this gun is legal to own where you live. We will take a personal check but it will be held for up to 10 days to clear our bank before shipping.Most Items will ship within 4 business days of payment and receiving of FFL license for shipping We take VISA/MASTERCARD and Discover FOR NO EXTRA FEE, We will also take USPS Money Orders. Items You've Viewed Recently Heckler & Koch MR556-A1 5.56mm 16.5" 30+... $3049.99 SELLER: Cornerstone Arms (FFL Dealer) Add To Cart