B&T folding stock and SB tactical brace

TommyV · Nov 25, 2021

I have a SB tactical SBT5A folding brace. I was under the impression that the B&T folding stock was interchangeable with the adapter that came with my brace. Well I received the B&T stock and the hinge section is too large. According to my micrometer the B&T hinge is 33mm and the SB is about 32mm.
It might be able to be modified to fit but was not expecting this at all. Just wanted to give a heads up for anyone else considering converting their brace over to a folding stock. I thought I was going to save some money.

kbinmt · Nov 25, 2021

I have put APC and UMP stocks on the manticore and sbtac aluminum backplates.

Have I tapped it in with a gunsmithing hammer or rubber mallet? Yes.

Which aluminum backplate came with your brace?

TommyV · Nov 25, 2021

kbinmt said:
I have put APC and UMP stocks on the manticore and sbtac aluminum backplates.

Have I tapped it in with a gunsmithing hammer or rubber mallet? Yes.

Which aluminum backplate came with your brace?

so the aluminum ones do not fit the same? This is the first I’ve heard of this =\ Which adapter would fit this perfectly? Only the B&T?

My adapter says MANTICORE 040

Apologies for the late response. Thank you for responding and Happy Thanksgiving!

kbinmt · Nov 26, 2021

The aluminum ones work. Perfect is a high bar. If you don't need the aluminum for a 5.56 buffered carrier, then the b&t mp5 backplate is best, but now you're buying something else.

BT-20152-BT - B&T Adapter For Folding Stock For HK MP5

bt-parts.com

Though your sbt brace has value

yuppiemike · Nov 26, 2021

Check this post out - B&T Folding Stock Hinge Screw Size- M4x55mm! outlines what is what size.

B&T folding stock and SB tactical brace

BT-20152-BT - B&T Adapter For Folding Stock For HK MP5

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