Bren 2 Complete Forward Assembly 11” - Swap for 16.5”

I have an unfired 11” front forend assembly in 556 to trade. Brand New!! All parts factory from CZ. Comes with everything you need to plug and play on the front of the gun. 
 

Looking to trade for a similar setup but with the forend being in the factory 16.5” from CZ. 
 

thanks!