Polymer lower receivers are becoming increasingly popular in the AR-15 world. There are several reasons for this, but chief among them is the fact that polymer lowers are often significantly lighter than their metal counterparts. This can be a big advantage when it comes to building a lightweight AR-15, and can also help to reduce felt recoil.
Another reason why polymer lower receivers have become so popular is that they tend to be much more affordable than their metal counterparts. This is especially true if you purchase your lower receiver as part of a kit, which will often include other required parts like the buttstock and trigger assembly.
Of course, there are some downsides to Polymer80 lowers as well. One is that they are not as strong or durable as a metal lower, so if you plan on doing any serious abuse with your rifle then a polymer lower may not be the best choice. Additionally, some people feel that polymer80 lowers do not have the same “quality feel” as a metal lower. This is purely subjective and ultimately comes down to personal preference.
If you’re looking for a lower receiver that is lightweight, affordable, and easy to assemble, then a Polymer80 lower may be the perfect choice for you. Just be aware of the potential downsides before you make your purchase.