Which TT and Hasbro parts are mixable?
Level chips
Frames
Discs(confirmed)
Tips(not)
Layers(not)
Face bolts 
Metal fight layers
Metal fight tips
Rise layers and whatever the things inside them are called
Thanks!

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If you read the Metal Fight Rules and the Burst Rules you can find the answers to these questions. But to clarify,

Burst Level chips: Yes (Hasbro LCs don't exist, TT LCs were recently changed to be allowed on Hasbro layers)
Burst Frames: Yes
Burst Discs: Yes
Burst Tips: No (Can't mix Teeth and Slopes)
Burst Layers: No (Can't mix Teeth and Slopes)
Burst Hasbro Rise Layer Bases: No (Can't mix Teeth and Slopes)
Burst Hasbro Rise Chip/Weight Combos: No (Can't mix Teeth and Slopes)

MFB Face bolts: Yes (Hasbro and TT functionally the same in MFB)
MFB Metal Wheels: Yes (Hasbro and TT functionally the same in MFB)
MFB Energy Rings: Yes (Hasbro and TT functionally the same in MFB)
MFB Crystal Wheels: Yes (Hasbro and TT functionally the same in MFB)
MFB Spin Tracks: Yes (Hasbro and TT functionally the same in MFB)

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Hey, parents! Here are all the answers to any questions about WBO Tournaments you might have! Thread-Guide-Hey-Parents-Answers-to-your-WBO-Tournament-questions

Please consult this guide linked below on how to arrive at tournaments before they start! https://worldbeyblade.org/Thread-How-to-arrive-at-tournaments-and-other-events-on-time

If you read the Metal Fight Rules and the Burst Rules you can find the answers to these questions. But to clarify,

Burst Level chips: Yes (Hasbro LCs don't exist, TT LCs were recently changed to be allowed on Hasbro layers)
Burst Frames: Yes
Burst Discs: Yes
Burst Tips: No (Can't mix Teeth and Slopes)
Burst Layers: No (Can't mix Teeth and Slopes)
Burst Hasbro Rise Layer Bases: No (Can't mix Teeth and Slopes)
Burst Hasbro Rise Chip/Weight Combos: No (Can't mix Teeth and Slopes)

MFB Face bolts: Yes (Hasbro and TT functionally the same in MFB)
MFB Metal Wheels: Yes (Hasbro and TT functionally the same in MFB)
MFB Energy Rings: Yes (Hasbro and TT functionally the same in MFB)
MFB Crystal Wheels: Yes (Hasbro and TT functionally the same in MFB)
MFB Spin Tracks: Yes (Hasbro and TT functionally the same in MFB)

Thanks! You can close this now if you want.

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Dun, dun, dun dun dun! My Faves and my life.
I love Unicrest Boi