Single Picatinny Aluminum Accessory Rail Set 3 5 7 9 11 13 Slots with 13 T-Nuts & Screws, 6 Wrench- Squared Corner- Aluminum

I only needed two of the pieces. While installing I realized I could use a couple different sizes and set things up differently than I had planned. Now all my "accessories" are more convenient and comfortable than I had even hoped for. Nice and solid after installation.

Put these on my Diamond Back DB-15 ARP and man it makes it look even better fits perfect and now i can add all of my attachments sides bottom and top. I like the stability once you bolt everything down. Comfort is the same as any rail

This riser is just right for mounting an Ecotech Holographic sight on an AR platform rifle. Easy to install and use is great, solid built piece.

I'm modifying one or more of these, so my opinion is likely different than others. As someone else stated, these don't look like aluminum, or almost like pot metal, but I think it's because of the paint. I ground into one and they are solid aluminum. They could even polish up if one so desired.I just don't like the fitting "nubs" on the bottom, which is probably desirable for some uses, but not for mine. Otherwise, 5 stars.

I bought these to mounty Accu-Tac bipod on my 300 win mag AR-10. I was hesitant to purchase because of the price and I didn't want my $500 bipod falling off or damage to my rifle. I was pleasantly surprised when I received these as they are great quality and so is the hardware. Mounts easily and is very sturdy. Don't hesitate.

Great Price!! I wish they would line up with no gaps but for the price they are good and quality is good fits on ar 15 and shot ~100 rounds stability is good with it still being tight.

Just what I needed with rails, screws/nuts, and Allen keys to spare.

Works perfect. We needed to attach a launcher to an ar, this worked