Here I am on the brink of doing this mod for my T3 Sporter (it just screams out for an AI mag), and the more I look the more makers I find that produce a DBM for the T3 actions.
So my questions are:-
1. How many on here have done this mod?
2. Which DBM metal did you use?
3. What problems (if any) did you encounter?
4. Would you have preferred another metal or would you look at others if doing it again?
Thanks.
I did mine before Christmas, as per the thread in "gunsmithing" (I think?):
I used the Third Eye Tactical Bottom metal. It's not a quick drop-in option; requires inletting. Comes with a choice of mag releases.
Service from Third Eye Tac was good.
The item itself seems well made but there was a lot of space for my 10 rnd mag. This let the front end of the mag drop enough to prevent reliable feeding, irrespective of what height the mag was positioned (which is also important.) I didn't want to rely on feed lip and ramp fiddling so I adjusted the bottom metal inletting to provide the angle required, irrespective of slop of the mag within the well. Feeds fine with mag hanging or rested.
Dummy rounds helpful for checking feeding.
The action bolts supplied are hex, instead of the factory flat-head screwdriver bolts (M6, I think.) The factory bolts actually sit better in the recesses of the bottom metal so I used them. You must watch out that these bolts are not too long or you'll have problems with the bolt, of course.
I bedded the bottom metal, though this is arguably not necessary in every case.
The TET item seems expensive compared to the US options but less so once Tax and shipping are factored in. I also looked at the Swedish one (forget the name, might be another Scandinavian country.)
I'm happy with mine.