The build quality is great, the frame is smaller than I had imagined. But this has nothing to do with the product or the description on Amazon. - To extend the frame or to "cut" the legs back one requires no tool. One is enough. One needs an adapter to make it on a Picatinny / Weaver rail mount. The adapter I ordered from AliExpress, the adapter costs about 5,09Dollar not find the link. Here is a link to an adapter for 7,99Dollar: [...]