What's the difference between the 2 and can the sling loops be removed, if so does the hole go all way through the adapter?
Would that be the "detachable sling loop" your asking about
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Sorry,my bad, put up the same link up by mistake. Yes the sling loop on the 150-200 is removable, via a push button at the bottom. But the knurled piece is what holds the mount on, and as JCS suggest, if you found it too bulk you could replace it with a suitable nut.
If £20.00 for both is any good to you then I'll take them, please pm me your paypal details and I'll pay through gift.