for a 16" barrel AR, you will have many options. Aluminum quad rails are usually what folks add of the bat. This will give you a mounting point for the standard AR accessories. Some folks are going with the lighter M-LOK rails that you simply buy the appropriate length rail slot to match with the accessory mount to save some weight. This will allow you to mount just what you need without having the added weight of full unused rails of the quad rail. Quad rail example : budsgunshop.com/catalog/product_info.php/products_id/10143/NCStar+MAR4S+Quad+Rail+For+Carbine+Weaver+Style+Matte+Black+ />

Danny, for a 16" barrel AR, you will have many options. Aluminum quad rails are usually what folks add of the bat. This will give you a mounting point for the standard AR accessories. Some folks are going with the lighter M-LOK rails that you simply buy the appropriate length rail slot to match with the accessory mount to save some weight. This will allow you to mount just what you need without having the added weight of full unused rails of the quad rail. Quad rail example : budsgunshop.com/catalog/product_info.php/products_id/10143/NCStar+MAR4S+Quad+Rail+For+Carbine+Weaver+Style+Matte+Black+