If you own a Remington 700 and want to work on it, you’ll require a way to remove the firing pin assembly indigenous the bolt. One method is to use a coin in the slot top top the shoot pin (demonstrated here), the various other is to use a bolt disassembly tool. You deserve to either to buy a tool or make one. If you desire to buy one, the Kleinendorst tool, easily accessible from Brownells works well. In this post, I’ll be structure one.
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TM 05539-IN, the Technical manual for the USMC M40A3 and M40A5, (you can uncover a copy of that here) has actually a set of drawings for a Remington 700 bolt disassembly tool had in it. Ok be making use of those illustrations to develop mine. During the food of this post, I’ll mention some dimensions, yet the rest deserve to be acquired from this manual.
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The complying with tools were ordered indigenous Brownells:
All lathe work-related is carried out on a Grizzly 4003G gunsmith’s lathe.
The bolt disassembly tool is composed of 3 pieces; a body, arm and handle. The body is made out of a item of 1″ diameter aluminum, 2.5″ long. The handle and arm are both reduced from 1/8″x5/8″ steel. The tool is organized together by 2 1/8″ role pins; 1.0″ and also .375″ long.
Building the bolt disassembly tool body
I begin with a scrap the aluminum cut a tiny longer than the finished (2.5″) length I’ll need.
The human body is secured in a 3 jaw chuck (a set tru Gator) and the ends space faced. A slight chamfer is included to both end of the body.
One end of the body is facility drilled.
A 3/4″ Silver and also Demming drill is secured in a truck. The dial indicator on the tail stock is supplied to determine the depth of cut.
The 3/4″ diameter hole is drilled .781″ deep.
Next, a .453″ (29/64″) feet is drilled 1.187″ deep.
This is what the end of the human body looks like. The bolt plug is hosted in this recess.
A .312″ wide, .920″ deep groove is reduced in the end of the body. A 2 flute, 3/16 finish mill was supplied to do this cut in lot of passes.
The human body is rotated 90 degrees and also a spotting drill is supplied to located the pen hole.
A 1/8″ drill little is offered to end up the hole. When the burrs space removed and also the sharp edges room broken, the body is complete.Fabricating the handle
The handle stock is secured in the mill vise v a collection of parallels. An end mill is supplied to square and also locate the finish of the handle.
Two .136″ (#29 drill) holes space drilled.
Fabricating the bolt disassembly device arm
The arm is squared in the mill. It has one 1/8″ hole in it. The hole is spotted and drilled.
The bar stock is coated in Dykem and also layout present scribed.
The square edges on the arm should be rounded at the belt grinder.
The arm is ready.Putting it all together
A .375″ lengthy 1/8″ role pin (ground one down from a 5/8″ lengthy pin) associate the eight to the handle. The arm and handle are connected to the body v a 1/8″ roll pin the is 1″ long. The pen is propelled with a roll pin holder (top left) and also driven flush through a role pin beat (bottom left).
The perfect bolt disassembly tool (left) beside a Kleinendorst tool from Brownells.
To use the tool, slide it end the bolt plug…
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You may have actually noticed the parts aren’t coated in a finish. I’ll coat the in Cerakote as soon as it warms up.
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