HK PARTS AND ACCESSORIES FOR SALE
MR556 upper, G36C stock & Geissele MR556 triggers for sale.
1) The URG-I styled MR556 upper has 16" heavy profile barrel, non-MR marked carrier, HK spring and buffer, Geissele Airborne Charging Handle, Geissele SMR 14.5" handguard along with factory HKEY 9" handguard and Battle Comp...