All of the reviews say it has an aluminum frame.
shootingillustrated.com/content/first-look-g-force-arms-chronicle-1911/
.
thefirearmblog.com/blog/gforce-arms-chronicle-1911-remixed-again-44815243
.
longislandgunclub.com/forum/all-things-guns/new-channel/970253-first-look-g-force-arms-chronicle-1911

At the heart of the CHRONICLE 1911 is its barrel, frame, and slide, all meticulously forged from 4140 steel and high-grade aluminum.

Hi Andrew and welcome. Given the weight of 35.2 oz's, it definitely has a "Steel" Frame. Cheers and stay safe!

Hi Andrew, this has aluminum frame, 4140 steel barrel and slide.
Stay safe & have a great day!

On the gforce site it says what Buds does. Then under features it says the frame is steel.