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  2. Heckler & Koch HK21 - Wikipedia

    en.wikipedia.org/wiki/Heckler_&_Koch_HK21

    The recoil reduction improved accuracy of fire. Reinforcing bars were added to the receiver to provide additional strength and a guaranteed 60,000 rounds minimum service life. The bolt head, extractor and locking roller holder were completely redesigned as were the bolt carrier and recoil spring assembly, belt feed unit, buffer, barrel and ...

  3. Firearm malfunction - Wikipedia

    en.wikipedia.org/wiki/Firearm_malfunction

    Failure to feed is common when the shooter does not hold the firearm firmly (known as limp wristing), when the slide is not fully cycled by the preceding round, or due to problems with the magazine. It can also be caused by worn recoil springs, buffer springs, or simply a dirty feed ramp.

  4. Recoil buffer - Wikipedia

    en.wikipedia.org/wiki/Recoil_buffer

    Reduction of perceived recoil discomfort is an immediate added benefit of this type of recoil buffer. [4] Some pneumatic recoil buffers used in firearms are fast, low-power gas springs. When compressed, they present initial resistance as the rod-to-seal grip is broken and then they move in a regular manner.

  5. Hydraulic recoil mechanism - Wikipedia

    en.wikipedia.org/wiki/Hydraulic_recoil_mechanism

    The usual recoil system in modern quick-firing guns is the hydro-pneumatic recoil system. In this system, the barrel is mounted on rails on which it can recoil to the rear, and the recoil is taken up by a cylinder which is similar in operation to an automotive gas-charged shock absorber , and is commonly visible as a cylinder mounted parallel ...

  6. Muzzle brake - Wikipedia

    en.wikipedia.org/wiki/Muzzle_brake

    Another advantage of a muzzle brake is a reduction of recoil fatigue during extended practice sessions, enabling the shooter to consecutively fire more rounds accurately. Further, flinch (involuntary pre-trigger-release anxiety behavior resulting in inaccurate aiming and shooting) caused by excessive recoil may be reduced or eliminated.

  7. Muzzle booster - Wikipedia

    en.wikipedia.org/wiki/Muzzle_booster

    A muzzle booster or recoil booster is a device fixed to the muzzle of a firearm, intended to harness the energy of the escaping propellant to augment the force of recoil on portions of the firearm. In spite of its name, a muzzle booster does not increase muzzle force or velocity but instead is usually used to improve the reliability and/or rate ...

  8. Stress Relief Solutions for Exotic Pets: From Birds to Reptiles

    www.aol.com/stress-relief-solutions-exotic-pets...

    Available in sizes from one ounce ($2.28) to five gallons ($34.50), API Stress Coat is a clear winner. Pet Remedy Reptile Calming Kit Based in the United Kingdom, Pet Remedy gives your reptile a ...

  9. Blowback (firearms) - Wikipedia

    en.wikipedia.org/wiki/Blowback_(firearms)

    In firearms, a blowback system is generally defined as an operating system in which energy to operate the firearm's various mechanisms, and automate the loading of another cartridge, is derived from the inertia of the spent cartridge case being pushed out the rear of the chamber by rapidly expanding gases produced by a burning propellant, typically gunpowder. [3]