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For: Echo 1 ER25 URX RIS UnitProduct Information:
Mounted it to a g&p metal receiver and it looks awesome. No dremmel work was needed. One tiny gripe though. At the top of this product page it states this is 12" long, it's actually 10.75". Not a huge deal, but I ordered a specific mock suppressor at a specific length for my m4 build. I know it's only a 1.25" difference, but I ordered a 12" ris and received a 10.75" instead.
easy to install
no moding needed
built-in front sight
ordered a 12" rail, received a 10.75" rail