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Topic: Open bolt

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	Automatic bolt catch release apparatus for firearm - Patent 4128042
		The bolt carrier of a conventional closed-bolt M16 rifle is retained in the open position upon firing the last round in a magazine, and the bolt carrier is released by manually operating the bolt catch 94 after a fresh magazine is inserted into the lower receiver.
		Since the bolt carrier 112 of the present open bolt conversion is always retained in the open or rearward position, however, the open bolt rifle may appear to be ready to fire even while the bolt carrier is engaged by the bolt catch.
		The bolt carrier is pulled backward in the conventional manner, and the bolt carrier pushes the hammer 37 to the cocked position in which the surface 59 of the hammer is engaged by the surface 60 of the automatic sear 61.
	www.freepatentsonline.com /4128042.html (2612 words)

	UZI Talk - Bolts
		The open bolt has a fixed firing pin that's an integral piece of the bolt face and causes the round to fire whenever the bolt travels forward to a closed position.
		Additionally, the bolt for the semi automatic version of the Carbine has a slot cut into the right side, allowing the bolt to pass over the blocking rail that is welded on the inside of the Model A and Model B receiver.
		Two openings are made in the trunion that the feet slide into when the bolt closes, allowing it to close fully on the chamber.
	files.uzitalk.com /reference/pages/bolts.htm (1114 words)

	Open bolt - Wikipedia, the free encyclopedia
		When the trigger is pulled the bolt goes forward, feeding a round from the magazine into the chamber and firing it.
		This is not generally true, however, as the operation of basic open bolt weapons sends the bolt carrier back into a cocked position via the excess gas from the spent round.
		In the U.S., the ATF made a ruling in 1982 that semi-automatic open bolt weapons are readily convertible to fully-automatic fire, therefore such weapons manufactured after the date of this ruling are classed and controlled as fully-automatic weapons (weapons manufactured prior to the ruling are grandfathered and are still considered semi-automatic).
	en.wikipedia.org /wiki/Open_bolt (284 words)

	Citrus: Tommy Bolt says U.S. Open in the major to win
		Bolt, 88, played in 17 Opens, winning in 1958 at famed Southern Hills Country Club in Tulsa, Okla. The native Oklahoman led after every round with 71-71-69-72 for a 3-over-par 283, and won by four over 22-year-old Gary Player.
		Bolt, dubbed "Terrible Tommy" and "Thunder Bolt" by the press, is a member of the World Golf Hall of Fame, but he was under par only twice in 48 Open rounds.
		BOLT: It's a combination of the narrow fairways and the high rough and the slick greens and the pressure of being the Open.
	www.sptimes.com /2004/06/13/Citrus/Tommy_Bolt_says_US_Op.shtml (625 words)

	[No title]
		One thing I have heard is that open bolt weapons don't heat up as fast, as you generally have air moving through the periods between fire.
		The open bolt action and movement of the bolt is actually quite light, and it is of a rotating bolt design, also like the M-16.
		The main concern I would have though in using an open bolt is fear of case head seperations resulting from the case being extracted from the chamber while pressures were excessive.
	www.strategypage.com /messageboards/messages/1-2003.asp (1308 words)

	Boltsniper Armament Industries
		In this kind of action the bolt is held open by the trigger sear when the gun is at rest.
		The section to the right of that fl shaft is attached to the bolt and runs overtop of the ejector pushing it into the ejection port through a slot in the receiver and bolt.
		The distance the shell was ejected depended on bolt velocity, but the nature of the system meant that the shell would be pushed out even if the bolt was moving very slow.
	www.boltsniper.com /BS-3/BS3.htm (1523 words)

	Sports: Bolt from the blue, without the thunder
		Bolt might recently have been denied a spot in the World Golf Hall of Fame, but he is the resident legend here.
		Bolt started on tour in 1946 but ran out of money and had to get a job before he returned for good in 1950.
		Bolt was tied with Nicklaus for the lead through 63 holes of the 1971 PGA Championship in Palm Beach Gardens, but the Golden Bear played those last nine holes in 3 under and Bolt settled for third.
	www.sptimes.com /News/061001/Sports/Bolt_from_the_blue__w.shtml (1545 words)

	Question? What does firing from an open bolt mean? - THR (Site not responding. Last check: 2007-10-31)
		The bolt usually has a fixed firing pin and the gun essentially slam fires and blows the bolt back to repeat the cycle until the trigger is let go of, or the magazine emptys.
		The bolt is held back by the sear and released on the trigger pull, fires until trigger released and then locks back on the sear until trigger pulled again.
		IMO, a fixed pin, open bolt design is easier to (illegally) convert to full auto, as you don't have to worry about issues around timing the bolt lockup with the hammer strike, and thus probably runs afoul of the "readily convertible" premise.
	www.thehighroad.org /showthread.php?t=54081 (1039 words)

	'58 Open champ recalls career-defining moment - GolfWeb@PGATOUR.COM U.S. Open Coverage (Site not responding. Last check: 2007-10-31)
		Ironically, Bolt, known for a mercurial temperament during his PGA TOUR career that began in 1946, was serene that week at Southern Hills.
		Bolt, then 42, posted rounds of 71, 71, 69 and 72 for a 3-over-par total of 283, four strokes better than Player's score.
		Bolt, who learned the game as a caddy in Shreveport, La., and is still a colorful character, is innately comfortable dealing with the captains of American business.
	www.golfweb.com /u/ce/multi/0,1977,3986939,00.html (768 words)

	Where's the Bolt?
		In a closed bolt system, the bolt remains forward, sealing the breech (back of the barrel) until the paintgun is fired.
		In an open bolt system, the bolt remains open until the time of firing, when it closes, chambering the paintball, then it opens again, for a new ball to fall into place.
		Many people argue that since the ball is jostled in the fraction of a second before firing, and since the bolt may open again before the ball actually exits the barrel, an open bolt paintgun will not be capable of the same accuracy as a closed bolt paintgun.
	www.warpig.com /paintball/technical/paintguns/balistic/closedopen.shtml (1286 words)

	Jacksonville.com: World Golf Village Hall of Fame - Tommy Bolt
		Bolt has been selected for induction into the World Golf Hall of Fame through the Veterans Category, an avenue for induction created in 2000 to honor professional players whose accomplishments occurred primarily before 1962 and who did not qualify for induction through any other means.
		Bolt, of course, disputes the tale and will only admit that he had a face fixed in fury and always was caught exploding at inopportune moments like when a cameraman captured the memorable image of him at the 1960 U.S. Open tossing a club into the lake in front of the 18th tee.
		Bolt also got a grip on his temper in time to win the one title he desperately coveted, the U.S. Open, in his home state of Oklahoma in 1958.
	www.jacksonville.com /special/wgv/inductees/tommy_bolt.html (1677 words)

	Tommy Bolt, U.S. Open, Golf, Interviews, ASAPSports FastScripts, Quotes, Transcript (Site not responding. Last check: 2007-10-31)
		It was the toughest Open that he ever played in.
		TOMMY BOLT: As hot as it's going to be, Peter, you're going to have to be in great shape, believe me. In 1958 I think every day was about 95, but we had about a 15 or 20 mile an hour wind blowing.
		He changed his grip entirely in the hospital, and he came out with a neutral left-hand and without the fear -- you have to work at it, you can't walk out on the tee and start playing like that, he worked hard at it, with the neutral left-hand to eliminate the hook.
	www.asapsports.com /golf/2001usopen/061301TB.html (3245 words)

	Collecting and Shooting the FAL Rifle - Rifle Disassembly and Reassembly
		Bolt Hold Open: With an empty magazine installed, when you pull back on the bolt handle the bolt hold open should move upwards and lock the bolt open.
		This can be manually accomplished by holding the bolt open and pushing the bolt hold open upwards until the bolt catches and is locked in place.
		When the bolt is open and the bolt hold open is pulled down the bolt will slam forward with great force.
	www.surplusrifle.com /fal/rifle/index.asp (803 words)

	Angel open or closed bolt system? - Paintball-Guns.com Forums
		open and closed bolt systems dont neccesarily mean its physically closed up or physically open in the air but it means what the job of the bolt is.
		Open or closed bolt describes the action of the bolt when the gun is fired.
		Open bolt systems are more simple, and allow for a higher rate of fire, closed bolts systems are more accurate because the motion generated by the cycling of the bolt occurs after the gun has been fired.
	www.paintball-guns.com /forums/showthread.php?t=1592 (258 words)

	G43/K43 Assembly & Disassembly
		Bracing the rear of the bolt firmly with the right hand, guide the rear of the bolt group up while your left hand continues to hold the forward end of the bolt group in the receiver.
		Anchor the rear of the bolt housing inside the rear of the receiver and maintain very strong downward pressure on the bolt carrier.
		There may be enough slop in the fit between the bolt housing and bolt carrier to allow you to lift the housing out of the rear of the receiver.
	www.gunsofthereich.com /pages/noholdopen.html (814 words)

	A MAC History Lesson (Site not responding. Last check: 2007-10-31)
		The SWD M11/9 bolt is the same exact bolt used in the closed bolt semi-auto guns, withthe exception that the SMG bolt's firing pin is not slotted, and lacks the firing pin spring.
		Cock the bolt back and make sure there are no rounds in the chamber (actually this is theoretically impossible in an open bolt gun as the bolt resting in the battery position should ignite the round, but always check and be safe).
		Remove the bolt from the upper receiver by moving the bolt rearward until the cocking knob is centered in the large hole at the rear of the cocking knob race.
	www.freerepublic.com /focus/fr/958763/posts (3944 words)

	Cobray Slam Fire Open Bolt Shotgun!
		This basically means that as you pull the trigger, the bolt closes with the firing pin extended, and the gun continues to fire as long as you hold the trigger down.
		As the first 22 began to roll off the assembly line, ATF announced that ALL open bolt guns, semi or auto, were to be classified as NFA (class III destructive device) guns.
		First, nearly all open bolt guns were full auto anyway (the shotgun you are looking at is the lone exception that's not NFA under today's rules, and is grandfathered as a "pre ban").
	www.openbolt.com (623 words)

	awbansunset.com forums - Powered by XMB 1.9.1 Nexus
		The bolt may be kept closed during the firing sequence only by the inertia of the bolt.
		Because the inertia of the bolt is what keeps the bolt closed, the bolt of an open bolt weapon is of necessity much heavier than a closed bolt gun.
		The way it works on a closed bolt version is that when you load the mag, insert it into the gun, and cock it, the bolt pushes forward, strips the round from the magazine, and puts it into the chamber.
	www.awbansunset.com /forumsOLD/viewthread.php?tid=2258 (902 words)

	pbreview.com - Paintball Reviews and Paintball Fields (Site not responding. Last check: 2007-10-31)
		As u know closed and open bolt as the same accuracy...so if they put an open bolt on it it should be near really near a spyder clone...
		all an open bolt is good for is to throw paint(angel and timmy owners) and pray you hit someone.
		Closed bolt means that the bolt is in the closed position when the marker isn't being shot.
	www.pbreview.com /comments/?rev=83683 (441 words)

	Please explain, "Fire from an open bolt" vs. "Fires from a closed bolt". thank - Gun and Game Forums
		Pulling the trigger releases the bolt, as the bolt moves forward it strips a round out of the mag, chambers and fires it just as it comes into battery.
		When the trigger is released the bolt catches on the sear as it is blown back after the last round fired.
		Firing closed bolt - most semi auto or select fire rifles, carbines, semi auto pistols, etc. have a floating or seperate firing pin that the hammer strikes to drive forward to pop the primer.
	www.gunandgame.com /forums/m1-garand/16753-please-explain-fire-open-bolt-vs-fires-closed-bolt-thank.html (590 words)

	ZDS Paintball - Marker Classification - Markers Without a Hammer
		It functions by holding the bolt open with pressure from the solenoid valve, which is vented to initiate firing.
		It uses the same mechanical sear to hold the bolt in the open position while idle, which is pulled away during firing to allow the bolt to be blown forward.
		The closed bolt action couldn't surpass 13-14 bps so the marker was shelved, assuming that it wouldn't be as popular as a faster, open bolt version (which was very likely an accurate assumption).
	www.zdspb.com /tech/misc/markers_nohammer.html (3609 words)

	Open Bolt / Closed Bolt - PbNation
		Open bolt guns, like egos, have the bolt in the rearward position after the marker is aried up.
		Open bolts are when the ball is fired when the bolt moves forward, so the breech is open previous to the trigger pull.
		Open bolt just means that when the gun is at rest and not firing, the bolt is in the forward position.
	www.pbnation.com /showthread.php?t=1978745 (2017 words)

	The Guns of Haller’s Army
		The Lebel bolt action is quite similar to that of the 11mm Gras rifle Model 1874, and the feed mechanism is similar to the 11mm Model 1878 Kropatschek rifle used by the French Navy.
		Primary extraction is given as the bolt handle is lifted by the projecting bolt strap working against a cam face in a long overhang on the top of the receiver.
		This rifle is a bolt action pattern with a comparatively small bolt which acts as the rifle's sole locking lug, locking against the split bridge receiver.
	www.geocities.com /hallersarmy/guns.html (548 words)

	UZI Talk - Mini UZI
		Closed bolt operated in addition to the standard open bolt operation found in the UZI carbine.
		Bolt feet are only used on the open bolt configuration.
		It fired from a closed bolt and came with a 19.34" barrel to meet federal regulations on the overall length of a rifle.
	files.uzitalk.com /reference/pages/minimain.htm (1375 words)

	SoldierTech: The Gun That Never Was
		The M-16 is a closed bolt weapon, while the M240 machine gun is an open bolt weapon.
		Weapons that fire from the open bolt start on sequence number 5 and work their way down through 7 back to 1, and finally stop on 4 (with the bolt locked open).
		The rifle itself is relatively straightforward (the G11 fires from the "closed bolt" position, and the breech is gas piston operated), with the exception of the rotating breech/chamber cylinder.
	www.military.com /soldiertech/0,14632,Soldiertech_G11,,00.html (1716 words)

	M60 7.62mm General Purpose Machine Gun
		As the bolt starts its forward movement, the feed cam is forced to the right causing the feed cam lever to turn in the opposite direction and forcing the belt feed pawl over the next round in the bolt.
		After the bolt is fully forward and locked, the operating rod continues to go forward, independent of the bolt, for a short distance.
		As the piston and bolt move to the rear, the extractor pulls the cartridge case from the chamber.
	www.inetres.com /gp/military/infantry/mg/M60.html (1633 words)

	How to Correctly Set Your Cocking Rod Length, and How Not to Damage the Body.
		First, we are going to cover why bolt position doesn't matter on an electro cocker, then we are going to cover why you shouldn't try to use the cocking rod to control the bolt location.
		On an open bolt gun, the bolt stays back until the gun fires, allowing ample time for one and a half, or two balls to load into the breach.
		As soon as the breach on an electro cocker opens, and the ball feeds in, the bolt is closing.
	www.moodypaintball.com /pages/tech/lugdamage/index.html (1211 words)

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