bolt head


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bolt head

The enlarged shape which is preformed on one end of a bolt to provide a bearing surface.
References in classic literature ?
I may say that it was with no regret that we bid adieu to Tigerland, as we rechristened the ancient Devon, and, beating out into the Channel, turned the launch's nose southeast, to round Bolt Head and continue up the coast toward the Strait of Dover and the North Sea.
Not only can the headspace be easily set by the owner, due to the barrel being tightened with a lock nut rather than screwed tightly against the front of the action, but the bolt head can be switched to accommodate different cartridges.
The system operates as follows: The bolt mechanism consists of two major components, the bolt head and the bolt carrier (which also carries the firing pin).
A rotating bolt head is the heart of the Blink feeding system that combines a smaller gas piston so you can whiff all three shots in less than a second.
Also, within one bolt head, there can be several calibers, further reducing the cost as compared with purchasing a new rifle.
By the time the gun fully recoils against the shooter's shoulder the shot has cleared the barrel and, aided by the spring, the bolt begins to move rearward, rotating the bolt head out of' engagement, ejecting the fired hull and picking up a fresh round from the magazine--all in milliseconds.
It has a free-floated stock, user-adjustable "CrossFire" trigger, floating bolt head and a pillar-bedded action.
MO FARAH and Usain Bolt head the shortlist for the 2013 World Athlete of the Year award.
MO Farah and Usain Bolt head the shortlist for the 2013 World Athlete of the Year award announced by the International Association of Athletics Federations.
As processes cannot completely clean the area under the bolt head, an unsanitary area can develop.
The Merkel RX Helix rifle is a linear bolt-action rifle that cycles in half the length of a conventional bolt-action, and features six locking lugs on a rotary bolt head, and a fully enclosed action housing with integrated Picatinny rails.