The frame is investment cast 4140 steel.

That is the gun that I carry every day and yes it is a Steel frame and slide. You will not regret buying one
The frame is made of steel and the grips are G10 for fantastic feel and durability. ----- (Specifications and Features): - Rock Island Armory TAC Ultra CS 1911 Semi Auto Pistol 51470 - Compact Size - .45 ACP - 3.625" Barrel - 1 in 16" Twist - 7 Rounds Steel Frame - Tactical Rail - Extended Beaver Tail - Single Action Only - Combat Hammer - Trigger Pull: 4-6 lbs - Dovetail Fiber Optic Front Sight - LPA MPS1-Type Adjustable Rear Sight - Ambidextrous Safety - Grip Safety - Black G10 Grips - Length 7.125" - Height 5.125" - Weight 2.25 Pounds - Parkerized Finish.

Hi Scott, Yes, 4140 Steel framed. The frame is made of steel and the grips are G10 for fantastic feel and durability. SPECS - Rock Island Armory TAC Ultra CS 1911 Semi Auto Pistol 51470 - Compact Size - .45 ACP - 3.625" Barrel - 1 in 16" Twist - 7 Rounds Steel Frame - Tactical Rail - Extended Beaver Tail - Single Action Only - Combat Hammer - Trigger Pull: 4-6 lbs - Dovetail Fiber Optic Front Sight - LPA MPS1-Type Adjustable Rear Sight - Ambidextrous Safety - Grip Safety - Black G10 Grips - Length 7.125" - Height 5.125" - Weight 2.25 Pounds - Parkerized Finish.

That is the gun that I carry every day and yes it is a Steel frame and slide. You will not regret buying one

Yes, Steel framed. The frame is made of steel and the grips are G10 for fantastic feel and durability. ----- (Specifications and Features): - Rock Island Armory TAC Ultra CS 1911 Semi Auto Pistol 51470 - Compact Size - .45 ACP - 3.625" Barrel - 1 in 16" Twist - 7 Rounds Steel Frame - Tactical Rail - Extended Beaver Tail - Single Action Only - Combat Hammer - Trigger Pull: 4-6 lbs - Dovetail Fiber Optic Front Sight - LPA MPS1-Type Adjustable Rear Sight - Ambidextrous Safety - Grip Safety - Black G10 Grips - Length 7.125" - Height 5.125" - Weight 2.25 Pounds - Parkerized Finish.

You are correct Scott. This is a "Steel" Framed Pistol.