Springer goes… SL8?
The all-new SAINT Edge Accurized Tactical Chassis, or ATC, from Springfield Armory, uses a monolithic lower chassis and is guaranteed to deliver sub-MOA accuracy.
The rifles, offered in a standard black model as well as an Elite Coyote Brown model with a better trigger and stock, are both built on a one-piece monolithic lower that is machined from 6061 T6 aluminum. Working towards precision use, they both use 18-inch 1:7-twist Ballistic Advantage barrels with .223 Wylde chambers in a truly free-floated design that ensures the barrel and gas system are not in contact with the lower. An Accu-Tite tensioning system eliminates play between the upper and lower.

The rifles use a direct impingement mid-length gas system and M16 bolt carrier groups along with a GI-style charging handle and a carbine “H” heavy tungsten buffer. The receiver extension is mil-spec and has a QD receiver endplate. The upper is made of 7075 T6 aluminum and has M4 feed ramps while the handguard has M-LOK accessory slots. The guns ship with 20-round Magpul PMAGs.

Looks like a combination of an HK91/PSG-1 and an old-school AR15/ M16 handguard, or, taking it a step further, an HK SL8 with a bit more Stoner.
More in my column at Guns.com.