Modern Historical Intermediate Calibers 023: The 6.35/6.45x48mm Swiss GP80

Information on this round and the weapons designed to fire it is scarce, so the details in this article may be at times incorrect. Just letting you know. -NF Before the SIG SG 550 was adopted by the Swiss Army as the Stgw. 90, there was another series of rifles, called the SG 540, which […]

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