SIG Manurhin Model 543 5.56x45mm 30-Round Magazine

These sold out quick! Feel like you missed out? We have the Sig 542 .308's coming soon and should be available the week of 01/05/26!! Check back here soon for the part number and wishlist button!

Original military-issue 30-round magazine for the SIG 543/SG 540 series rifles chambered in 5.56x45mm. These staggered box magazines are built from steel construction for durability and reliable feeding.

Features a hold-open tab that engages the rifle's bolt catch after the last round is fired, locking the bolt in its rear position for fast magazine changes. Compatible with the SIG SG 540, SG 543, and Manurhin-produced variants.

Historical Background: The SIG SG 540 series magazines were designed alongside the rifle platform in the late 1960s by SIG (Schweizerische Industrie Gesellschaft) in Switzerland. Due to Swiss neutrality laws restricting arms exports, SIG licensed production to Manurhin of France, who manufactured rifles and magazines for military contracts worldwide. These magazines saw service with the Lebanese Armed Forces, French Marine Infantry, Portuguese military, and Chilean Armed Forces (via FAMAE). The robust steel construction and reliable feeding system contributed to the platform's reputation for dependability in harsh conditions.