After many years of teaching the shotgun and carbine, our rater elected to add this AR stock to his personal long-serving 870 to provide a common feel between rifle and shotgun and also for ease of carry in the truck. So, we are rating both the shotgun's application and the parts. The parts are not plastic, but instead are made of high-impact polymer and have a solid feel. We fitted an inexpensive NC3 light for evaluation. The stock is solid, and without rattles, and is easily adjusted. Being able to shorten it does help when storing the Remington in the home or when using it as a truck gun. We really like that the vented recoil pad is something you do not need with the M4 rifle, but which you do need with the hard-kicking 12 gauge. We liked the parts, and if we were rating the shotgun parts alone, they would get an A. These parts added a half pound to the base Remington 870 Riot gun, making it the heaviest in the test. As might be expected, it also kicked the least, and felt recoil was mitigated by the vented recoil pad.