sorry semi auto shotguns are not allowed a pistol grip budsgunshop.com/feeds/state_reg/washington_dc_restrictions.pdf

No.

Hi Dmitri, unfortunately no, due to the pistol grip. The following are prohibited:
✘ Semi-automatic shotguns that have one or more of the following features:
❌ 1. Pistol grip that protrudes conspicuously beneath the action of the weapon
2. Folding / telescoping stock
3. Thumbhole stock
4. Vertical handgrip
5. Has the ability to accept detachable magazine
6. Shotguns with revolving cylinders:
a. Franchi SPAS 12 and LAW 12
b. Striker 12, Streetsweeper type S/S Inc. SS/12
.
budsgunshop.com/feeds/state_reg/washington_dc_restrictions.pdf

Hi Dmitri and welcome. Unfortunately, no due to the Pistol Grip. Details on page 3 of 5 here: budsgunshop.com/feeds/state_reg/washington_restrictions.pdf