I was one of the early users of these rail covers along with a few other products from Moruzzi's. Before I get into my opinion on these rail covers. I would like to say that the customer service, attitude, and quality of the product would lead me to purchase any one of the products Moruzzi's offers for a large number of applications. Not only do they look great, but they are also durable, lightweight, and backed by a company that is proactive in satisfying their customers. The weight of the covers I received (single 3-slot rail) came in at .311 Oz W/O hardware. The hardware came in at .085 Oz (x2) for a total of .481 Oz. Based on my research this is under the average weight of most competitors rail covers. I had the opportunity to use these in two separate weekend long carbine classes and have used them almost daily since installing. They have held up well, and I have not hesitated in giving them a beating. I am not affiliated with Moruzzi's and have not been tested a large batch of these so the weight may very slightly but in general they will be lighter than anything currently on the market, I just wanted to provide a general weight range for those building lightweight carbines/rifles. The texture has aided very well in the Minnesota winter, experienced no slippage in the wet spring, and prevent heat build up from affecting bare hands during long summer days on the range. Installation was a breeze, they come packaged well. I also tested the (V1) "Shorty" Hand Stop, and the "A.F.G" Hand stop, so feel free to head over to those and view my review on those two products. I will also be purchasing the A.F.G V2 and Micro Stop V1 and potentially the Straightedge for testing and reviewing, I will post separate reviews for those items at a future date.