Does a Ruger Charger with an 18.5" 10/22 carbine barrel count? Dont own one myself but know someone who does. Thats the longest barreled pistol Ive ever seen. Im not sure if the OAL is still under 26" though.
Blessed be the Lord my strength which teacheth my hands to war, and my fingers to fight -Psalm 144:1, KJV, a Psalm of David