Nordic Components, Inc.

Jarmo Kumpula

Timothy Ubl

Tim Ubl

Disclosed herein is a modified upper receiver assembly and method of assembly, which in one form is operatively configured to be fitted to a conventional lower receiver of a rifle so the user can use their normal lower receiver having a pistol grip, trigger assembly and butt stock. The upper receiver is configured to provide a blowback bolt assembly of larger mass than would be possible with similar density materials of a bolt fitted within an upper receiver conventionally made for said lower receiver.

Blowback bolt upper receiver and barrel assembly

A rifle conversion platform assembly comprised of components to fit around an existing action such that attachment locations such as a hand guard, pistol grip, and butt stock attachment locations are provided to have conventional rifle components, which in one form may be components of a high caliber semiautomatic rifle such as an AR-15, attached thereto.

Rimfire action platform conversion

Disclosed herein is a modified upper receiver assembly, which in one form is operatively configured to be fitted to a conventional lower receiver of a rifle so the user can use their normal lower receiver having a pistol grip, trigger assembly and butt stock. The upper receiver is configured to provide a blowback bolt assembly of larger mass than would be possible with similar density materials of a bolt fitted within an upper receiver conventionally made for said lower receiver.

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Hutchinson, MN, United States of America

Jarmo Kumpula