If you are converting to LEM and yours is a V1, you already have the V1 detent plate. You'll lose the decocking, but still have the safety.
Edited to clarify
If you keep your V1 detent plate, you will lose the decocking function but still retain the safety. You can still push down on the safety lever, but that doesn't activate the decocker anymore since it's now gone. If you want to get rid of the decocker altogether (no push down, no decocker), then get the V5+6 detent plate.
A forum dedicated to and laser-focused on Heckler & Koch firearms, Heckler & Koch accessories and the owners and enthusiasts that love them! Come join the discussion regarding HK pistols, long arms, NFA arms, HK accessories, HK history and trivia and more.