ULTRALIGHT LOWER RECEIVER-FDE

[Wall]

FDE Gen4 Mag Tactical Systems Ultralight Lower Reciever - $170
Will ship to FFL on your dime.

constructed of metal alloy. No plastic, carbon fiber or polymers
Features:
35% lighter than aluminum lowers
Magnesium alloy construction
Total weight of 5.875 ounces
Integral trigger guard that still allows for winter gloves to be used
Reinforced trigger and hammer pin axis points
Reinforced front pivot pin
Corrosion resistant finish
Includes extended trigger and hammer pins
Works with standard AR15 components
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[StealthESW]

Magnesium is a crazy metal and has some interesting applications. I think it was used in the B-29 for a short time. I want to say it was the engine blocks or something in the wing.

Interesting find.

 

[Wildcat]

Magnesium was used on planes up until the mid 70s. Very unique receiver!

 

[Matt1911]

Magnesium doesn't taste good on Nachos.