Working...

Your Cart

  • Your cart is empty

Back


HK

HK HK 81000077

Product Code : 642230259300

$1,993.99

Mfg Item #: 81000077

The MR556A1 Upper Receiver Kit includes a complete upper receiver/barrel assembly bolt carrier assembly buffer and buffer spring allowing most high-quality 5.56 mm AR-style rifles to be retrofitted to HK's pusher rod system. - Complete MR556 Upper Receiver/Barrel Assembly HK 16.5 inch cold-hammer forged barrel upper receiver with forward assist extended convertible charging handle HK Free Floating Rail System handguard - Complete MR556 Bolt Group Assembly - Tungsten Filled HK Proprietary Buffer - HK Proprietary Buffer (Action) Spring

Determined at checkout.

Some US states prohibit perceived advertising or marketing of firearm related products to persons under 18 years of age.

Please verify that you are at least 21+ for handgun purchases & 18+ for shotgun/rifle purchases.

YES NO