Airsoft Canada - View Single Post - M4-S system Can you do a metal body?

vondnik · November 10th, 2005, 17:30

will need MAJOR modification of the metal body and a dremel will probably not be sufficient for the job... the top rail is integrated in the top part of the receiver and screwed there... the standart metal body has a fixhed hollowed rail that sitch there.... Removing the rail to fit the M$-SIR top rail will most probably split the upper receiver. SO IMO tyou would have to mill out the lower part of the top SIR rail to fit ontop of the M4 metal body rail and install a few screws....One hell of a job, but yeah it "can" be done....just don't expect to make the permenant modification in one evening and without the proper machinery.

This is all theorical at best and should not be used as a can be done answer. I could probably do it but I have access to a fully tooled machine shop

In the end unless someone actually make a metal upper for the system S rather stick with the plastic body.

November 10th, 2005, 17:30	#2
vondnik Ban-Fu Sifu Trader rating Join Date: Nov 2002 Location: Socialist republic of Kebekistan	will need MAJOR modification of the metal body and a dremel will probably not be sufficient for the job... the top rail is integrated in the top part of the receiver and screwed there... the standart metal body has a fixhed hollowed rail that sitch there.... Removing the rail to fit the M$-SIR top rail will most probably split the upper receiver. SO IMO tyou would have to mill out the lower part of the top SIR rail to fit ontop of the M4 metal body rail and install a few screws....One hell of a job, but yeah it "can" be done....just don't expect to make the permenant modification in one evening and without the proper machinery. This is all theorical at best and should not be used as a can be done answer. I could probably do it but I have access to a fully tooled machine shop In the end unless someone actually make a metal upper for the system S rather stick with the plastic body. __________________ Vondnik, team Bad Karma, PQAC Murphy's second rule: Nothing is impossible for the man who does not have to do it himself.