Science Fair Project Encyclopedia
Heckler & Koch PSG1
The PSG-1 ("PršzisionsSchutzGewehr", german for presicion sniper rifle) is a widely known semi-automatic sniper rifle designed by the German company Heckler und Koch. It has a long and outstanding reputation as an extremely reliable and high performance rifle, commonly associated with elite sniper units.
Its expected accuracy is 1 MOA and is one of the world's most accurate sniper rifles, capable of putting 50 rounds of match ammunition inside an 80mm circle at 300 meters.
All PSG-1s are free of iron sights but come mounted with the Hensoldt 6x42 scope with illuminated graticule, a heavy free-floating barrel and adjustable stock. The PSG-1 stock can be adjusted in all directions, to perfectly fit anybody using it. Furthermore it features a removable and adjustable trigger unit, for further individual perfection of the rifle.
Due to its high cost (9000 USD per rifle) and weight, the rifle has limited use outside of the police field.
- Caliber: 7.62 x 51 mm NATO
- Length: 1208 mm (47.55 in)
- Barrel: 650 mm (25.6 in)
- Rifling: 4 grooves, right spin
- Magazine capacity: 5 or 20 rounds
- Markings: "PSG1 HK Kal 7.62x51 serial number"; all on left side of magazine housing
- Safety: Manual safety catch on left side of receiver, above trigger. UP for safe, DOWN to fire.
- Unloading: Magazine catch on right side behind magazine housing. Remove magazine. Pull back cocking handle to eject any round remaining in the chamber. Examine the chamber and feedway through the ejection slot. Holding the cocking handle, press the trigger and allow the cocking handle to go forward under control. Push on the bolt-closing catch on the right side of the receiver to firmly close the bolt.
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