I ordered a Bluefork design trigger assembly made for a 2240, I believe I have seen MRods with pistol grips and AAR 15 stocks and assumed they were 2240 lowers, which means the BlueFork would fit.
Or am I having a senior moment?
I sent Marmot a question in reference to this and thier reply was :
The P-rod and 22xx series pistol grips will fit the M-rod directly
There is no such thing as "friendly fire"..