Sig P320 Full Size Tungsten Guide Rod by Springer Precision

Precision ground from solid durable tungsten, these allow use to use common 1911 springs in your Sig P320. This allows you to easily tune your gun to your loads and preferred recoil impulse, while getting the added weight of Tungsten. Will not fit in M18. 

*ONLY compatible with the P320. Weight 2.98 oz.