The Sig Sauer 716 "3-Gun" is a non-cataloged rifle. This rifle has many features we have seen on the 716 Patrol including a 4-position piston operating system, flip-up front and rear iron sights, and a quad rail (albeit slightly longer).
You even get the durable Magpul 20-Round PMAG, but two this time around compared to one on the Patrol rifle. The differences may not be easy to spot, however there are some notable upgrades which make this rifle stand out from the standard Patrol rifle (or other Sig Sauer AR-style rifles we have seen thus far).
First and foremost, this rifle ships in a very nice hard plastic case similar to the SSG 3000 case. New is the 18" Heavy Barrel - it's threaded and includes a thread cap. This may very well be the same barrel we will find on the R716 'Precision Marksman' when it's eventually released. Next, a TI-7 stock sits on the buffer tube with QD sockets on either side which you can use in combination with a 2 point sling (not included). This stock feels strong and sturdy - a fine addition to the rifle. Also welcomed is an upgraded latch on the charge handle to give a better grip, especially while wearing gloves. While on the subject of gloves, a Magpul Winter Trigger Guard sits nicely under the trigger. A raised letter 'G' is cast on the side of the new trigger, a hint that you will have something better than the standard Mil-Spec we've been accustomed to. In place of this basic unit Sig Sauer has installed a Geissele 2-Stage Trigger to complete the 3-Gun package.