Risky business: What type of M14 stock are you currently rolling with? If the stock is a big red birch, then you can cut a decent amount of weight off of her overall by switching stocks to that of a std contour M14 birch stock or synthetic.The other "easy fix" when toting your rifle around in the field is to simply use 5 or 10 rd magazines vs the 20rd. ( 20rd M14 mags that are topped off weigh in at 1.5lbs.)
In terms of weight reduction, one can also further reduce it by removing the flashider/front sight/castle nut altogether, and installing an SEI gas lock front sight. add a thread protector on the muzzle, and your set. (Be advised that your personal preference may not coincide with this plan however...as it affects appearance, sight radius, and bbl harmonics to some extent.)
Jumping back to the stocks here.......... if you leave the selector lever hole unfilled, this would also keep a tad bit of weight off of the stock overall, but if the rifle is to be used in the field, I would fill it, as it can allow for nasty stuff to land smack on top of the trigger group.
You didn't mention if you were using optics on this rifle, but if you are, or want too in the future, a decent optics mount for a lightweight M14 type = an ARMS18 split rail mount. Other than an LRB M25 receiver, this type of mount is the lightest weight rock solid mount that I have found so far.
The above mount is getting hard to find, but if one desires to......they can have a full rail version of the mount converted to a split rail version. ( Contact Warbirds custom guns for more info.)
Weight of optics and rings can vary by quite a lot, so being very selective in this regard will help keep it down in terms of overall weight.
Henschman: Did your SAI plastic stock come with a rubber buttpad, or an M14 metal buttplate? Does the stock have the cut out on the top near the aft of the stock to install an M14 metal buttplate if desired, or is it more along the lines of an M1 Garand?
I recently acquired a GI synthetic M14 stock that had the following mods done to it.
1. Selector lever hole filled
2. Front Ferrell widened
3. M14 buttplate removed, and M1 Garand plate installed.
This set up shaved a few ouces off the overall weight of the stock, and reduced the LOP by about 1/4inch. ( Marinetex for the filled areas)
I'm still looking for a takeoff SAI plastic stock so that I can try out the same mods as the M14 synthetic mentioned above.
Below is a few pics of the GI M14 synthetic I'm referring too.