Minimalist rail handguard for TM M870 Breacher Shotgun

Disclaimer:
This is intended for airsoft purpose only. Do not use it on any sort of firearms.
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Description:
A tiny railed handguard that replace the original handguard on TokyoMarui M870 Breacher Shotgun. It allows you to attach a fore grip.
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Extra material required:
none
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Extra modification required:
none/reversable
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Extra tools required:
You may want to buy the disassemble tool to remove part #870T-6
Step to install: (Please refer part number to TM user manual)

1. Twist out the end cap of the shell tube.
2. Remove part #870BR-3.
3. Remove part #870T-6 .
4. Remove part #870BR-8 (Handguard).
5. Slide in the RAS.
6. Lock the RAS in place by putting back #870T-6 then put back #870BR-3.
7. Put back end cap of shell tube.
   Finished