Heckler & Koch MR556A1 Upper Receiver Kit 5.56 NATO 16.5" Barrel 9" Handguard
$1,703.9 0 in
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Specifications
Caliber
Model
MR556
UPC
642230259300
Action
Semi-Auto
Barrel Length
16.5"
Fits
AR-style rifles retrofitted to HK pusher rod system
Platform
AR-15
Description
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