A scheme for stable shot-to-shot few-cycle pulse production has been realized by launching an initially collimated laser beam into a gas tube. We found that the optimum parameters for the sevenfold compression of $55\mathrm{fs}$ , $5\mathrm{mJ}$ , Ti:Sapphire laser pulses are the following: $0.8–0.9\mathrm{atm}$ argon gas pressure and the registration aperture with a diameter of $300–700\mu \mathrm{m}$ . A technique for the efficient extraction of the self-compressed pulse from the desired position along the filament has been provided by moving the registration aperture along the tube. With this technique, pulses as short as $8\mathrm{fs}$ were detected at a distance of $1\mathrm{m}$ from the filament starting position, in agreement with numerical simulations performed using a $3\mathrm{D}+\text{time}$ axially symmetric code.