Larry, only difference is model 2303-20 has 28 inch barrels and 2201-20 has 29 inch barrels. Buds doesn't have the correct barrel length listed in the description. Other than that they're identical. Hope this helps.

Hi Larry and welcome. Both seem to have the same specifications although some websites have the 2201-20 as having 29 inch barrels instead of the 2303-20's 28 inch barrels. I would contact Rizzini Customer Service to get an accurate answer if any differences at 435-462-0040 or by email inquiry at info@rizziniusa.com - Cheers and stay safe!