Dionysusigma, yes baba louie is correct. I don't think there is anything else that makes it special other than the handle made to clear a scope.
wcwhitney, I threw the bipod in cause as you can see the stock has the swival attachment installed in the forend. I have used this stock previously for other builds I've done. I have bedded this stock in my own fashion for use as a test stock and the bipod is one thing I use to help when accurracy testing an 03 off the bench. The stock when new was never of sufficient quality dimensionally for a finished product, or at least to my standards. The reason the barrel channel at the muzzle end comes up to far when the receiver is tightened into the stock. So I had to "modify' it by reworking the mating portions of the stock inside and deepen the barrel channel to get it to not put undue upward pressure on the barrel when put together. In these 03 mil-spec stocks with the full forend the trick is to bedd the receiver pretty much as you would anyother and to hold the barrel securely in the forend, both from the bottom and the top WITHOUT having the barrel be pulled up, down, left or right. But being as this is Project Frankenstein, an assembleage of pieces and parts ..... I'll use it.
Here's a couple of pics of the stock bedding and handguard modifications I've done if anyone is curious.
This is the bedding of the entire receiver portion of the stock. Done with epoxy and steel shim to provide encasement for the recoil lug portion of the receiver.
http://img245.imageshack.us/img245/9580/img3132by7.jpg
Close up of the encasement portion. Steel shim is used from automotive feeler gauges. It works wonderful cause it also allows you to align and center the receiver and barrel in stock and barrel channel by using different thicknesses of feeler gauge.
http://img413.imageshack.us/img413/8862/img3134jk3.jpg
http://img20.imageshack.us/img20/7196/img3129js2.jpg
This is the rear portion of the stock. Note the expoxy bedding around the rear tang and the wings where the receiver splays out above the trigger rail. Also note the metal sleeve insert in the rear hole. Its length is absolutely critical to this process. If it is too short it will cause the receiver to have undue stress when tightened. Too long and it will not allow the trigger guard to lend support to the receiver for regidity.
http://img91.imageshack.us/img91/8255/img3128gf7.jpg
http://img265.imageshack.us/img265/5753/img3133kq7.jpg
The under side of the handguard. Note where the metal spring clips are I have simply placed pads using the hook side of velcro with adhesive backing over the clips. This provides the necessary clamping downward force on the barrel to keep it tightly in the barrel channel.
http://img248.imageshack.us/img248/9673/img3130to8.jpg
This is the top side of the handguard showing some minor inletting to provide clearence for the front bell of the scope. When it is all finally fitted I no doubt will need to do more inletting cause I will mount the scope so the bell is literally as close to the barrel as possible.
http://img340.imageshack.us/img340/1892/img3131um8.jpg
This is the receiver and triggerguard together. Couple of things here. One note how the rear screw sleeve length affects the clearence between the receiver and the side walls of the magazine. You want the magazine walls to Not contact the receiver. Some filing of the magazine walls may be needed to accomplish this. The length of the sleeve is determined by the stock itself. Measurements must be made. The ideal end result will be that when the rear screw is tightened the rear tang of the receiver, the rear tang of the triggerguard and the sleeve will all be held fast while providing compression of the wood in the stock in between. Not enough compression, the sleeve is too long. Too much compression not allowing the screw to come tight against the sleeve, inlet the stock on the triggerguard side a bit until it is right. Same is true for the front. You want the front screw to come tight against the receiver while providing compression of the wood of the stock between. Measurement is required. That is the square area behind the recoil lug and in front of the magazine well. So when it is all put together the stock is clamped tight in between the receiver and the triggerguard and the triggerguard is only contacting the receiver at the front and rear screws. If you did it correctly there will be no undue stress against the receiver yet everything will be tight as a bug in a rug
As you can see in this picture because this is not the actual sleeve installed in the stock it appears that the rear of the magazine walls are contacting the receiver and would require some filing of the magazine walls.
http://img142.imageshack.us/img142/1919/img3135vm8.jpg
It's all very simple really. Just takes time, some simple tools, and some expertise with your hands and mind.
But as you can see the results if done correctly are spectacular
http://img143.imageshack.us/img143/6379/1903a4400targetij0.jpg
I hope Frankenstein shoots that good