Great for ar builds - Wheeler Engineering Delta AR Upper/Pic Rail Vise Block

Great for AR builds, used a clamshell vise block on my AR9 build and when I went to place the BCG it eould not slide in. Evidently I crushed the upper receiver just enough to bring it out of specs. Sent is back to Odin and they were gracious enough to send me a new replacement and a baseball cap, patches, stickers to boot! Mad props to Odin works. Anyways this wise block will hold the upper receiver by sliding the picatinni (SP) rail on two long groves and thus holding is securely without any stress to the receiver structural integrity. Highly recommended!