I purchased a CMMG .22lr conversion kit on sale and have found that it is surprisingly reliable and accurate in my M&P-15 VTAC II Rifle. This rifle is in service as my police patrol rifle. I thought I remembered hearing in one of the modcasts that this kit is hard on the hammer and other lower components but I couldn't find that segment again. I would like to use the kit to get more trigger time on my duty rifle but don't want to risk causing a failure in the future. Is anyone aware of these kits causing any issues? Thanks.