Try a Mossberg Model 385K. This is what it was originally
Cannot find an exact match- but if your trigger guard is black plastic- and especially if it has finger grooves in the tail of the guard- it was probably made by Mossberg. You can order replacement trigger guards from havlinsales.com There are 3 different trigger guards- check the photos to see if they match your rifle.
The trigger guard is available from Numrich Gun Parts. There are two different types of trigger guards for the Savage 6d. The plastic guard that has a inletted area for the trigger guard in the stock and the simple bent metal trigger guard that just screws into the stock wood. Plastic trigger guard is product # 103530U $24.10 Metal guard is product # 10543OAL $11.50
Open bolt, move it to the rear of the action. Hold the trigger to the rear and remove the bolt. Remove the large takedown screw in front of the trigger guard and separate the barrelled action from the stock. That's as far as it should be routinely disassembled.
http://www.forsterproducts.com/Pages/screws_trigger.htm
http://www.e-gunparts.com/products_new.asp?CatID=4264 In fact, just ordered a trigger guard for my 341p.
Try e-gunparts.com
There is one currently on Ebay
I have a CNC Billet Aluminum tube fed trigger guard for a Winchester model 77. I have then polished or hard black anoidzed.
try gunstocks inc
We have them. gunshop@nctv.com
http://www.e-gunparts.com/productschem.asp?chrMasterModel=089Zz5100 This link is what your looking for.....copy and paste this link,there you will find your trigger guard for about $11.00 bucks and just about everything else for the 5100....including scematics for it....happy shopping.