Amalgamated Ti is a new AR-15 receiver and parts manufacturer who plan on bringing their products to market later this year.  As their name suggests, their parts will all be made from titanium.  The benefit of using titanium it has a much better weight to strength ratio than steel and is very corrosion resistant. The downside is that it costs a lot more than steel and it harder to work with.

Their titanium AR-15 stripped lower will sell for $199.99. It is made from the Grade 5 Titanium Alloy 6AL4V. Inside it is lined with UHMW low friction polymer. It weighs 6.75 oz, making is about 25% lighter than aluminum AR-15 lowers and about 20% heavier than magnesium-alloy lowers. Unlike magnesium lowers, the titanium lower will not corrode and is impervious to salt water. The company claims the lower will be 200% stronger than a lower made from steel.

Along with lowers they will also be making a stripper upper receiver, 7″-15″ lightweight handguards, charging handles and low-mass bolt carrier groups.

Thanks to D-Force MEGA for the tip.