It is a 1911 and most parts will fit (just like with the RIA) but many 1911 parts require fitting the 1911 guns have always required fitting of parts and most aftermarket suppliers build their parts slightly oversize so the can be properly fitted

Bennie, yes Sir they are. ((Specifications and Features)): - Caliber/Gauge: .45ACP - Color/Finish: Blued - Barrel length: 5 - Magazine Capacity: 8 - 4140 slide with rear military serrations - Military slide stop - Military safety lock - Matte black military trigger - Shooters Arms Manufacturing in the Philippines - All steel parts - Solid mahogany grips - Compatible with many different brands of 1911 magazine, the FX series is certain to have the 1911 pistol enthusiast set for years of satisfactory shooting.