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Rifles, Reloading, Optics, Equipment
Gunsmithing
Request to Kirby or other 'smiths...
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<blockquote data-quote="Fiftydriver" data-source="post: 166790" data-attributes="member: 10"><p>I do not have any pics at this time but I can discribe the process for you:</p><p> </p><p>step 1</p><p>Level the receiver in the milling vice, mag port up.</p><p> </p><p>Step 2</p><p>With a square end mill cutter you take roughly 0.120" off the back of the mag well window. Basically, you will be cutting it back until your about 1/2 way through the small diameter screw hole ment for the ADL forward trigger guard screw. This depends of course on the diameter of the mill your using as you have to extend the window back just enough so that the extended mag box will fit snuggly in the new elongated window.</p><p> </p><p>Step 3</p><p>Extend the radiused rim clearance window on each side real back to the new back of the mag window.</p><p> </p><p>Step 4</p><p>Deburr the fresh cuts to make sure there are no burrs in the bolt way to cause bolt movement issues.</p><p> </p><p>Step 5</p><p>Cut the surface of the bolt stop that stops the bolt back roughly 0.110". I actually prefer to cut it back 120 to 125 thou but thats just personal preference. 110 thou is in the instructions.</p><p> </p><p>Step 6</p><p>Clamp up the floorplate if a BDL and mill the rear of the floorplate frame that controls the mag box enough for clearance of the longer box.</p><p> </p><p>Step 7</p><p>Made a milling cut to the back of the mag well in the stock is needed. Surpisingly enough, often times this is not needed.</p><p> </p><p>Step 8</p><p>Assemble rifle and make sure that the new mag box floats between receiver and floorplate. Your done, test for function and send out the door.</p><p> </p><p>Kirby Allen(50)</p></blockquote><p></p>
[QUOTE="Fiftydriver, post: 166790, member: 10"] I do not have any pics at this time but I can discribe the process for you: step 1 Level the receiver in the milling vice, mag port up. Step 2 With a square end mill cutter you take roughly 0.120" off the back of the mag well window. Basically, you will be cutting it back until your about 1/2 way through the small diameter screw hole ment for the ADL forward trigger guard screw. This depends of course on the diameter of the mill your using as you have to extend the window back just enough so that the extended mag box will fit snuggly in the new elongated window. Step 3 Extend the radiused rim clearance window on each side real back to the new back of the mag window. Step 4 Deburr the fresh cuts to make sure there are no burrs in the bolt way to cause bolt movement issues. Step 5 Cut the surface of the bolt stop that stops the bolt back roughly 0.110". I actually prefer to cut it back 120 to 125 thou but thats just personal preference. 110 thou is in the instructions. Step 6 Clamp up the floorplate if a BDL and mill the rear of the floorplate frame that controls the mag box enough for clearance of the longer box. Step 7 Made a milling cut to the back of the mag well in the stock is needed. Surpisingly enough, often times this is not needed. Step 8 Assemble rifle and make sure that the new mag box floats between receiver and floorplate. Your done, test for function and send out the door. Kirby Allen(50) [/QUOTE]
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