Faxon Firearms FF-SIL-R-3DPC-556-02 Harmonix Ion 5.56mm Black Titanium
https://www.tandktactical.com/shop/816341029453-faxon-firearms-ff-sil-r-3dpc-556-02-harmonix-ion-5-56mm-black-titanium-57246
https://www.tandktactical.com/web/image/product.template/57246/image_1920?unique=21a8116
The Harmonix ION is constructed from lightweight Grade 5 Titanium, weighing just 8 oz without sacrificing reliability.