BAD-EMC-IC Enhanced Magazine CatchFeatures: Process: Investment Cast (Same Process as Mil-Spec) Material: 8620 Heat Treated Steel Finish: Black Phosphate Finish Construction: One Piece Engineering (Not Two-Piece) Design: Lightweight Fluted Design Compatibility: Compatible with Mil-Spec Magazine Release Button, BAD-EMR, BAD-EMMR, etc. Length: Shorter Threaded Pin to Reduce Installed Magazine Button Profile of Solid FaceMagazine Release Buttons Weight: 0.25 oz (v.s. 0.32 oz Mil-Spec) Due to variances in DPMS style 308 lowers this may be not work with your receiver.