blowback


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blow·back

 (blō′băk′)
n.
1. The backpressure in an internal-combustion engine or a boiler.
2. Powder residue that is released upon automatic ejection of a spent cartridge or shell from a firearm.
3. Negative repercussions affecting a country whose government has undertaken a usually clandestine intelligence operation in another country.

blowback

(ˈbləʊˌbæk)
n
1. (General Engineering) the escape to the rear of gases formed during the firing of a weapon or in a boiler, internal-combustion engine, etc
2. (Military) the action of a light automatic weapon in which the expanding gases of the propellant force back the bolt, thus reloading the weapon

blowback

1. Escape, to the rear and under pressure, of gases formed during the firing of the weapon. Blowback may be caused by a defective breech mechanism, a ruptured cartridge case, or a faulty primer.
2. Type of weapon operation in which the force of expanding gases acting to the rear against the face of the bolt furnishes all the energy required to initiate the complete cycle of operation. A weapon which employs this method of operation is characterized by the absence of any breech-lock or bolt-lock mechanism.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.blowback - the backward escape of gases and unburned gunpowder after a gun is fired
blowup, detonation, explosion - a violent release of energy caused by a chemical or nuclear reaction
backblast, back-blast - backfire from a recoilless weapon
2.blowback - misinformation resulting from the recirculation into the source country of disinformation previously planted abroad by that country's intelligence service
misinformation - information that is incorrect
References in periodicals archive ?
Other superb gas-powered blowback airsoft replicas include the MAC-11 and HK MP5K subguns, plus the Beretta M93R, Glock 18c and HK VP-70 machine pistols.
Chopped trim is collected in bulk bags, while dust is conveyed to a sleeve filter that has automatic blowback cleaning.
32 ACP-chambered blowback pocket auto, but the fact is that the 7.
The Model C9 is a straight blowback 9mm with a 3 1/2" barrel, polymer (tested) or aluminum frame, 1911-style magazine release, 8-shot magazine, magazine disconnect safety, easily operated thumb safety, and the slide locks back after the last round is fired.
Bag filters with blowback cleaning are best suited to regrind or dusty materials.
Other features include blued finish a 10-round magazine, blowback system, fixed barrel and ergonomic composite grip.
This unit had eliminated a problem for another of AMI customers by using a blowback feature to clean and purge vented ejector and core pins between molding cycles.
In the past, auto pistols have been termed "blowback," "locked breech," and "retarded blowback.
The new VacTrac control system is highly versatile, available in time- or volume-fill configurations; and with or without blowback capabilities to help it meet all material conveying and filtration needs.
KIMBER RIMFIRE TARGET Action type: Blowback semiautomatic Caliber: .
A "Brody-ring" seal on the check valve reportedly eliminates blowback around the valve, which may be of sliding-ring or ball-check type.
The action of the UMP45 is a direct blowback - not roller lock blowback like the MP5 that has been made famous on most HK long guns.