breechblock


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breech·block

 (brēch′blŏk′)
n.
The metal part that closes the breech end of the barrel of a breechloading gun and that is removed to insert a cartridge and replaced before firing.

breechblock

(ˈbriːtʃˌblɒk)
n
(Firearms, Gunnery, Ordnance & Artillery) a metal block in breech-loading firearms that is withdrawn to insert the cartridge and replaced to close the breech before firing

breech•block

(ˈbritʃˌblɒk)

n.
a movable piece of metal for closing the breech in certain firearms.
[1880–85]
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.breechblock - a metal block in breech-loading firearms that is withdrawn to insert a cartridge and replaced to close the breech before firingbreechblock - a metal block in breech-loading firearms that is withdrawn to insert a cartridge and replaced to close the breech before firing
blockage, stoppage, occlusion, closure, block, stop - an obstruction in a pipe or tube; "we had to call a plumber to clear out the blockage in the drainpipe"
breech, rear of barrel, rear of tube - opening in the rear of the barrel of a gun where bullets can be loaded
References in periodicals archive ?
Its locking system was a small turn-bolt breechblock in the massive slide.
Caption: The Model 1886 was the first lever action to have vertical locking bars that engaged mortises in the breechblock, a feature that vastly increased the strength of the action.
The breechblock is highly polished, with the locking bolts in a contrasting satin, natural color.
Remington is advertising a 25 percent reduction in muzzle rise due to the low bore and recoil-absorbing properties of the Pedersen breechblock (more on that in a second).
While the Sharps breechblock slid downward when its lever was activated, that of the Starr rocked backward.
The first step after disassembly was plugging the old rimfire firing pin channel in the breechblock.
Oddly enough, the breechblock tilts to one side; many thought this would put undue strain on one side of the receiver, but Goryunov made the receiver's sideplates thick enough to avoid problems.
Crewmen, springs that are too tight can be a bummer, especially if they happen to be the closing springs on your Paladin's breechblock.
The main differences were the protection of the gun crew and the adoption of a full-automatic loading system and of a semi-automatic breechblock, the system carrying on board 36 complete rounds, including 12 ready to fire and 24 kept in a magazine located behind the front cabin.
A separate steel breechblock is dovetailed/pinned into the slide, and holds the extractor, firing pin, and firing pin block.
The breechblock comes out easily, provided you remember to put a dab of bore grease on its threads.
The design of the super gun called for a solid titanium breechblock.