Stubborn Mule Outdoor Supply (SMOS Arms) www.smosarms.com is the latest company to enter the Billet Lower Market.

They are a small company so they take their time building each lower thus quality control is very high right now. I ordered one for myself to see if the lowers are as good as they sounded. Sure enough, when I received the lower, I was very impressed with the finish and fit of the lower I received. The lower is very similar to the POF GEN 2 lower with the built in trigger guard. The magwell is flared out nicely for quick reloads and all the edges are smoothed out compared to some other MFGs.

Features:

* Machined from solid billet 7075 T6511 Aluminum
* Large magazine well bevel for easier magazine feeding
* Contoured Integral trigger guard
* Finished in black type 3 hard anodizing
* Accepts industry standard lower parts kits
* Produced entirely by SMOS ARMS








Comparison to other Billets
Sun Devil - SMOS - POF GEN 3



Magwell Comparison
POF GEN3 - Sun Devil - SMOS