Would this compensator fit?

[Silver131]

Would this compensator: http://www.dillonprecision.com/content/p/9/catid/17/pid/24667/Jerry_Miculek_AR_15_Compensator

Fit this upper: http://www.jsesurplus.com/Custom16M41x9Moly5.56CarbineRailHeightGBUpper.aspx

It appears it would, but want to be sure, thanks for any help

Also after pin/weld it would be MA compliant correct?

 

[EddyMunster]

Same size thread pattern, so it'll work. Standard size for a 5.56 is 1/2" x 28tpi

 

[Silver131]

Thanks

Same size thread pattern, so it'll work. Standard size for a 5.56 is 1/2" x 28tpi