BudsGunShop.com - Delaware compliant

No, Delaware's restrictions go further than the workarounds for CA and prohibit semi-automatic rifles with a detachable magazine and "Any grip of the weapon, including a pistol grip, a thumbhole stock, or any other stock, the use of which would allow an individual to grip the weapon, resulting in any finger on the trigger hand in addition to the trigger finger being directly below any portion of the action of the weapon when firing" budsgunshop.com/feeds/state_reg/delaware_restrictions.pdf

Hi Hector, unfortunately no, the fin grip does not make it DE compliant. Prohibited - A semiautomatic, centerfire rifle that can accept a detachable magazine and has ---
Any grip of the weapon, including a pistol grip, a thumbhole stock, or any other stock, the use of which would allow an individual to grip the weapon, resulting in any finger on the trigger hand in addition to the trigger finger being directly below any portion of the action of the weapon when firing.
budsgunshop.com/community.php/q/view/q_id/93565/products_id/100464/delaware+compliant

Hi Hector and welcome. Unfortunately, no, it does not. Delaware does not exclude the fin on the pistol grip. Cheers and stay safe!

No, this is not legal/compliant for Delaware as explained below.