TheAsal G41'susul engineeringteknik origins layG41 interletak thepada [[7.92×33mm Kurz]] [[StG 45(M)]] [[assaultsenapan rifleserbu]], anddan laterkemudian the commercially successfulNATO 7.62×51mm NATOyang sukses secara komersial [[Heckler & Koch G3|G3]] [[battlesenapan rifletempur]] anddan itsturunannya 5.,56×45mm NATO HK33 derivative.<ref name="woźniak" /> It is a [[selective fire]] automatic weapon that employs a [[Blowback (firearms)#Roller-delayed|roller-delayed blowback]] system of operation relying on geometrical transmission ratio relationships between parts. The two-piece bolt mechanism consists of a bolt head that contains two cylindrical locking rollers and a wedge-shaped locking piece, attached to a heavy bolt head carrier. Based on the geometric relationship arising from the angles of the roller contact surfaces of the wedge-shaped locking piece locking piece and the barrel extension recesses, the rearward motion of the bolt head is delayed by a predetermined ratio. Thus during the same period of time, the bolt head carrier moves significantly faster than the bolt head by the predetermined ratio. This ratio is continued until the locking rollers have been withdrawn from the barrel extension recesses. After the rollers retract entirely behind the bolt head, the locking recesses of the barrel extension are cleared, and all parts continue moving rearward together, opening the breech and actuating the extraction and feeding cycles. The chamber is opened under high pressure, thus the chamber received a series of flutes in order to increase extraction reliability and prevent sticking of the spent casing to the chamber walls.
Like the G3 and HK33 bolts the G41 bolt features an anti-bounce mechanism that prevents the bolt from bouncing off the barrel's breech surface. The "bolt head locking lever" is a spring-loaded claw mounted on the bolt carrier that grabs the bolt head as the bolt carrier group goes into battery. The lever essentially ratchets into place with friction, providing enough resistance to being re-opened that the bolt carrier does not rebound. The spring-powered claw extractor is also contained inside the bolt while the lever ejector is located inside the trigger housing (actuated by the recoiling bolt).
