1911 picatinny rail options

I am looking for a picatinny rail to mount a red dot on my 1911. What companies offer this?

Rock River Arms for one.

DA/SA wrote:Rock River Arms for one.

Thanks. Any idea if this is steel or aluminum? 

I prefer aluminum to keep weight down.

That's a good question, as it does not say.

https://www.rockriverarms.com/index.cfm?fuseaction=category.display&category_ID=1683

A phone call may be in order.

It's aluminum. Or at least as light as. I can do a magnet test this evening.

Dave

The Rock River Arms mounts without iron sights are aluminum.  If you have low mount sight cuts in the slide I'd recommend KC's Cover Up Mount, it covers the back nicely so you don't have a gap.  I have one and I'm very happy with it.

https://kcskustomcreations.com/product-category/rra-slide-mounts/