With shotguns, the term combo
typically applies to a gun with one stock and action and two sets of barrels. With trap guns, a combo
is usually a double/single barrel set.
There's no hard and fast rules about what's a field model and what's sporting (target). Here are some of the features that distinguish field and target models:
- Sling swivels are rarely seen on target guns.
- Target models are typically heavier that their corresponding field models.
- Automatically engaging safeties and target guns don't mix. Guns without (or bypassed) safeties are for the target range only.
- "Flashy" guns with highly reflective and white metal are usually target models. Camo finished guns are destined for the field.
- Guns with large extensions such as bolt handles, action releases or clamp-on recoil reducers are for the range since they tend to snag things in the field.
- Target guns will have a vent rib with a mid rib sight; but, these are seen more and more on field guns, too. Guns with wide, high, step and/or adjustable ribs are typically target models.
- Target guns will have smoother triggers set to a lighter pull than field models.
- The higher and straighter the stock, the more likely it's a target gun. Guns with a lot of drop are generally field guns. The extremes are obvious but there may be some overlap. Quality target stocks tend to be a little thicker. Few target guns have synthetic stocks. Stocks with adjustable combs were once found only on high end target guns, but are now found on entry level target and some multipurpose models.
- Barrels with extended forcing cones, over-bored tubes, porting and precision screw-in chokes were once limited to target guns but can now be found on some multipurpose and field models.