ASELSAN's a-Bülten monthly newspaper has mentioned a new variant of TOLUN Small Diameter Bomb (SDB) named TOLUN-S in its October issue.
TOLUN-S was mentioned in the article about the locally-developed Inertial Measurement Unit Kılavuz-31. Kılavuz-31 will be used in TOLUN and TOLUN-S SDBs with localised components.
While TOLUN-S hasn't been mentioned, it might be the surface-launched variant of TOLUN mentioned by the former Secretary of Turkish Defence Industries (SSB) İsmail Demir in an interview with TRT News in 2023. The surface-launched TOLUN will use Delta-V's hybrid rocket motor for launch, which might give it advantages in range when compared to the similar GLSDB using an M26 artillery rocket's engine. GLSDB can reach a range of 150 km from the frontal aspect and 90 km if it is launched towards a target on the rear.
A surface-launched TOLUN can be an alternative to artillery rockets with its low IR/radar signature and higher penetration capabilities against structures in fire support roles.
TOLUN is evolving into a family of SDBs with the recent test of TOLUN-IIR from AKINCI UCAV, where the IIR seeker-fitted variant successfully hit the target armoured vehicle 20 km away.

