The LM4 PTR Series return spring assembly includes parts 76, 203, 37, 189, and 207. These parts are all pre-assembled  and ready for easy installation for the do-it-yourselfer. Occasional replacement of this assembly helps restore performance and cycling abilities to your LM4, LM4C, LM4 RIS, or LM4 KR Series.
This polymer replacement lip fits the KWA M1911 MK Series and new M1911A1 21 round magazine. To prolong the life of your new lip, make sure to slowly ease the follower up when releasing it from the locked position. You can also make sure that you leave a 3-4mm gap from the top of the magazine when filling it with BBs.
This polymer selector plate fits the original RM4 ERG mechbox, but it does not fit current ambidextrous models! It appears on RM4 mechbox diagrams as...
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