Retro Arms IUR upper, chambered in 5.56mmx45; 16’’ barrel. Mounted to a Flat Top upper, All OEM US made small parts.
IUR Gas Block Made from US 4140 steel and 2 1.75’’ Rails in the 3 and 9 O'clock position, flip up sight. A thermosett OEM low dome Hand Guard is added for your convivence
“This upper is expected to ship some time at the end of February. By ordering you are pre ordering your item, helping us with the building of the IUR sales
Retro Arms IUR upper, chambered in 5.56mmx45; 16’’ barrel. Mounted to a Flat Top upper, All OEM US made small parts.
IUR Gas Block Made from US 4140 steel and 2 1.75’’ Rails in the 3 and 9 O'clock position, flip up sight. A thermosett OEM low dome Hand Guard is added for your convivence
“This upper is expected to ship some time at the end of February. By ordering you are pre ordering your item, helping us with the building of the IUR sales