Unlike the name would imply, this weapon is usually a sword (or to be more specific, a gunblade) instead of a gun.
リボルバー [revolver] in Japanese.
Final Fantasy VIII
Stats: ATK 11, Hit 255%
Limit Break: Rough Divide
Buy: 6 M-Stone Piece, 2 Screw, 100 gil
Description: Squall's basic weapon. The Gun blade's original model is the Revolver. It lacks in power, it more than makes up for its reliability.

Airborne Brigade

SR+
Type: Sword, Element: -, Growth: Slow, Cost: 26
Attack: 2,260 (lv1), 10,449 (lv120), 13,734 (lv150), 17,368 (lv180), 21,321 (lv210), 25,570 (lv240)
Defense: 2,290 (lv1), 10,588 (lv120), 13,916 (lv150), 17,599 (lv180), 21,605 (lv210), 25,910 (lv240)
Obtain: (FF8 event?)
SR
Type: Sword, Element: -, Growth: Slow, Cost: 19
Attack: 1,640 (lv1), 7,573 (lv100), 9,957 (lv125), 12,595 (lv150), 15,465 (lv175), 18,550 (lv200)
Defense: 1,630 (lv1), 7,528 (lv100), 9,898 (lv125), 12,520 (lv150), 15,373 (lv175), 18,440 (lv200)
Obtain: (FF8 event?)
Pictlogica

Stats (lv1): STR +50
Stats (lv15): STR +80
Buy: - (sell: ? gil)
Obtain: initial equipment on Squall
Use: Shear Trigger
Type: Greatsword, Rarity: ★★★, Element: -
Record Keeper

Revolver (VIII)
Stats: ATK +77, ACC 95 (lv1), ? (lv5), ? (lv10), ? (lv15), ? (lv20), ? (lv25), ATK +129, ACC 95 (lv30)
Max Level: lv20 (initial), lv25 (first evolve), lv30 (second evolve)
Type: Sword, Rarity: ★★★★★
Other: enables use of the limit attack Rough Divide when equipped by Squall
Category: Equipment