Late to the game. I bought these birchwood casey 2x4 with hook and the other side with a nut and bolt. It was on sale, i got 2 for the price of 1. Plus free shipping to hawaii after you soend 50 bucks!! As well as a promo code, it was either 10 or 15 percent off site wide. 😁. So i ordered a bunch of other random spare parts to get that free shipping. Shouldve bought more of these tho 😔😥
As for the base i just pounded the 2x4 into the ground after pouring water to make the dirt a bit softer. Later ill buy the correct stand. The advantage to this is if i buy more i can shoot at different heights as well as spread them out. So i can do some foot work. Or while i shoot 1 my other bajillion friends can shoot the others.
Right now i just have a 8 inch wide, 1/2 inch thick round plate and a 12 inch, 0.5 inch thick rectangle plate. Both are ar500. Works good with pistols. Never tried rifle yet.
Also a bonus, i put them in my back seat. I drive a sedan so im limited on trunk space. Idk if metal will rip my interior but i know wood wont as long as its not jaggedy edged. Ive transported wood 2x4, 4x4, shelving alot.