This over-under Beretta SV10 Perennia I 20-gauge barrel with a 28" barrel features a vault-like low-profile action, self-adjusting fore-end mechanism, Kick-Off recoil-reducing device which is a hydraulic dampening system, super-durable cold-hammer forged OptimaBore barrels, supersized asymmetrical barrel shoulders, wide top lever, detachable trigger group, and an ejection system that works flawlessly with cartridges of different brass-height.