Heckler & Koch MR556 A4 Complete AR-15 Upper Receiver - 5.56 - 11"

Name: Heckler & Koch MR556 A4 Complete AR-15 Upper Receiver - 5.56 - 11"
Brand: Heckler & Koch
SKU: retailer_offer:primaryarms.com:51000385

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$2,179

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Updated

Aug 26, 2026

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Brand

Heckler & Koch

Description

Heckler & Koch MR556 A4 Complete AR-15 Upper Receiver - 5.56 - 11"

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Heckler & Koch MR556 A4 Complete AR-15 Upper Receiver - 5.56 - 11"

Specifications

Description

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