Ulfberht .338 Lapua Magnum

[Rootshot]

I'm curious to see the details of how the flapper locking mechanism has been engineered. Since aluminum couldn't deal with the force of firing if the flaps engage directly into the receiver, there must be a newly designed barrel extension for the flaps to engage into.

There is a great video on flapper locks at Forgotten Weapons. This includes some criticism of the design towards the end of the video.

--Rootshot