rail

interesting article in the Atlantic (yes I know, left wing media) https://www.theatlantic.com/international/archive/2020/02/china-brazil-amazon-environment-pork/606601/ Brazil is cutting down forest for more crop land and building a train to get it to port. China needs soy to feed its pigs...

Attention survivalists, I would like to award you the importance of issues related to our wonderful rail system. Anyone who has ever used a passenger train service to travel inside the United States should feel free to hold a conversation here. Washington state is taking on new projects that...

I've recently purchased a H&K MP5 .22LR at a Cabelas nearby and I was looking at what rail to get for it to mount a holographic sight. Any suggestions? Also I don't want to buy a $100 mount for a $500 gun so try to keep the price reasonable. So what rail and where to get it, would be awesome...

Guys, I would like to scope my rifle so that I can shoot right handed but see through the scope with my left eye. (right one is bad). Is there some kind of a rail adjuster that will let me mount something several inches to the left of the main rail? Thanks!

Obviously I am a noob when it comes to tactical accessories. I am trying to understand the difference between Picatinny and Weaver rail systems. Are they the same? If not, will one work with the other or vice versa? i.e. If I buy a Picatinny rail system can I only get Picatinny capable...