How to change rear sights on an M14?

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Hello everyone, Can someone tell me what is involved in replacing the rear sight on an M14?? I just bought a Garand rear sight for $70 to replace the one that came on my Poly M305, I just want to know if it is a straight forward, quick replacement or if there are any difficulties I may encounter?? A quick explanation (or even better, a link to a video) would be much appreciated.

Thanks
 
I copied this from the M-14 Doc....

To remove sights follow these steps:
When removing the rear sight can be a bit of a challenge getting it back together is more-so. To remove the Rear Sight, start by completely lowering the Rear Sight Aperture into the rear sight housing by turning the Elevation Knob.
With the Aperture bottomed out, use the Combo-Tool to loosen the screw on the Windage Knob (right hand knob) by turning it in a counter clockwise direction. Back this screw all the way off. It won't fall out but the threads must be completely disengaged. the screw on the Windage Knob (right hand side) is completely backed off - hold the Elevation Knob (left hand side) so that it will not move.
At this point turn the Windage Knob in a counter clockwise direction until it comes loose and can be pulled off. The Windage Knob is then removed from the Sight Assembly …with the Windage Knob removed the Elevation Knob can easily be pulled off of the Sight Assembly from the left.When both of the sight's knobs have been removed the next step is to remove the Aperture. Then pry up under sight cover until it springs loose.
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To remove sights follow these steps:

First adjust windage all the way to the left as far as it will go.
Next, undo the windage lock sleeve with flat blade screw driver, turn until loose, do not try and remove, collar is held in with a retaining clip.
Next, with collar loose, undo the windage knob and remove the knob.
Remove elevation pinion by pulling out of sight base
Remove aperture
Insert flat blade screw driver into aperture area under sight cover and gently pry up until it springs loose.
Done.

Installation,
Clean and regrease all parts
Install sight base and rear cover together
Dab of grease to receiver at sight location recess
Use flat blade screw driver under back of sight base on bottom lip of sight cover and push firmly, sight cover should snap into place
Next, install aperture
Next install elevation pinion, ensuring it is completely in and meshed with aperture.
Slide sight base to the left side
Install windage knob ansd with your thumb, turn the lock collar only in a reverse direction until you feel it sink in a bit it has now engaged the pinion shaft correctly
Next turn the collar with screw driver forward until it comes just snug
Then turn windage knob to engage with sight base
Adjust lock collar as needed to tighten or loosen the sight knobs

To adjust elevation to agree with barrel length follow these instructions
For standard length barrels:
Turn elevation knob to put aperture at it's lowest point.
Next turn elevation knob to put aperture 8 clicks from bottom
Firmly grasp elevation knob and undo screw in elevation knob. You want to prevent any movement of aperture and knob while undoing the screw
Once loose, again hold aperture so it can not move and turn knob to line up the 200 yrd/mtr sight mark with the sight mark on the receiver
Tighten screw while holding knob firmly
Turn windage and observe 8 clicks from bottom to 200 yard zero

For 18 inch barrels try 12 clicks from bottom for 200 zero (M-14 Doc)
 
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ive heard quite a bit baout swapping out the rear sight for a garand sight, however i dont know the ins and outs, whats the advantage?
 
Just wanted to throw another thank you out to all who replied to this thread. I just dropped the new sights on my M305 and it went quite smoothly thanks to the good advice I received here.:cheers:
 
Finding the right tension on the screw plays a considerable role. Keep in mind that the tension screw on the right side has detents that it clicks into, and the screw locks into those detents in half turn increments. If you move and position it between the detents, it creates an artificially high tension position that may lock up the elevation wheel. When you then move it say a quarter turn further and it drops into the detent, the tension drops off again slightly. So work with it in half turn increments to set the tension where you want it.
 
Grizzlypeg said:
Finding the right tension on the screw plays a considerable role. Keep in mind that the tension screw on the right side has detents that it clicks into, and the screw locks into those detents in half turn increments. If you move and position it between the detents, it creates an artificially high tension position that may lock up the elevation wheel. When you then move it say a quarter turn further and it drops into the detent, the tension drops off again slightly. So work with it in half turn increments to set the tension where you want it.
Click to expand...

Yeah, I had to play around a bit to get the tension right on the elevation wheel so that I could positively feel each click, think I got it right now though.
 
The actual rear sight, the part with the aperture and rack type gear, interchanges between garand and m14, so you can buy a target rear aperture and install it on that garand rear mechanism.
 
Grizzlypeg said:
The actual rear sight, the part with the aperture and rack type gear, interchanges between garand and m14, so you can buy a target rear aperture and install it on that garand rear mechanism.
Click to expand...

How does the target aperture differ from the standard Garand one I just installed(or the stock one I replaced), is the sighting hole smaller?
 
It has a finer aperture, a hood to help excluse ouside light, and it can be turned to move it up or down 1/2 moa for a fine adjustment. You can get them mail order from Creedmore if your interested.
 
Thanks guys, I think I'll leave it for awhile until I've gotten a chance to use it a bunch, then if I want something more precise I can upgrade if needed. Nice to know that I have that option though as I have no intention of scoping this rifle. Any idea on a ballpark cost for the target apertures?

Thanks
 
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