Building the perfect rifle starts with the lower receiver. We have a huge selection of AR-10 lowers and all the parts you need to put together. With our AR-10 lower receivers, you'll never have to worry about having an improper fit for your rifle. Our AR-10 receivers feature all the same great innovations found in our other models and are compatible with any standard AR-10 kit. Why buy an AR-10 lower receiver? Whether you want to build an AR-10 rifle from scratch or piece one together, a stripped or complete AR-308 lower receiver can be the perfect option. Machined from solid forged 7075 aluminum, these receivers are a product of extreme precision.