The SIG-Manurhin SG542 is a rare civilian semi-automatic rifle, a French-made copy of the Swiss SIG 542 battle rifle, chambered in .243 Winchester due to French import laws. It features an AK-inspired long-stroke gas piston system with a rotating bolt and stamped sheet metal construction. This rifle represents a significant transitional design in Swiss small arms development, bridging the gap between older battle rifles and modern assault rifles.
The SIG 550-1 Sniper, a semi-automatic variant developed for Swiss police, features a heavy 25.6-inch barrel in 5.56x45mm for enhanced velocity. It boasts a highly adjustable stock, specialized trigger, and Hensoldt optics, but its high 1989 price point and 7.62mm competition like the H&K PSG-1 limited its market success, making it a rare collector's item.
The H&K PSG-1 is a highly specialized semi-automatic sniper rifle developed for police counter-terrorism, stemming from the 1972 Munich Olympics. It features extensive modifications over the G3 platform for sub-0.5 MOA accuracy, including a heavy barrel, modified roller-locking system, precision trigger, and a unique tripod. Its original $10,000 price tag and dedicated design made it an iconic, albeit rare, precision firearm.
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