Barrel twist rate: .223 Rem’s performance depends on matching bullet weight to twist. Many Sabattis are 1:9″ (good for light‑to‑mid‑weight bullets), but heavier match bullets may require a tighter twist (1:8″, 1:7″ etc.). Confirm the variant you’re buying.

Magazine compatibility: Some models use proprietary or Sabatti polymer mags; others are AICS compatible. If you want aftermarket or easier replacement, check this.

Threading at muzzle: If you want to use a suppressor, brake, or other muzzle device, check what thread and whether there’s a protector. Sabatti often uses ½‑28 UNF thread on .223 models.

Weight and length: Various models differ a lot. A tactical chassis rifle will weigh more, be longer; a hunting version will be lighter. Important for portability, recoil feel.

Trigger: Sabatti offers “standard” triggers vs “match / 3‑lever” triggers in many models. If precision or target shooting matters, go for the better trigger.

Rifling style: Some Sabattis have “MRR” (Multi‑Radial Rifling, Sabatti’s special rifling style) or standard rifling. The claimed benefits include some increase in velocity, possibly less bullet deformation. But real‑world performance depends heavily on ammo, barrel length etc.