Modified Milsim shows MK12 Mod 1 SPR HPA Rifle which is based on the rifle used by Marcus Luttrell, played by Mark Wahlberg in the movie "Lone Survivor" this is powered by the PolarStar Airsoft Kythera HPA engine... "This is not a clone correct rifle. Just a fun project for airsoft events."

Modified Milsim shows his customised Double Eagle N4 GBB, which is based on the MWS gas blowback system of Tokyo Marui... "Here is my 14.5" Milsim Build. It features the Double Eagle N4 MWS system with some after market parts that overall looks and performs great."