This is a 2 pack of ER-hops from HS Armory. The R-hop is the ultimate hopup system on the market today and I don't make that statement lightly. The R-hop system not only greatly increases accuracy but also increases range at the same velocities. It distributes the pressure on the BB better than any other system available including flat-hops and all after market buckings. They also are intrinsically very durable and pretty much never wear out. These are the same as the original R-hops except that are much longer which give them the ability to most consistently hop even the heaviest rounds on the market. To install these the barrel window needs to be extended. I only recommend you do that yourself if you know what your doing and how to do it correctly. It's highly recommended that you read the guide and maybe watch some videos to get the best install. If it's your first install you might want to look at the Z-kit as it's designed for easier installation.
Here is a quick overview install guide of the R-hop by HS5.
This product was added to our catalog on Friday 31 August, 2012.