Very nice! Looks pretty clean. It would be more clean if you kept the back orange part. Also Adding 1/2 PVC over each of the barrels with e-tape and goop might protect the PETG and make the gun look better.
I am awful at colors, but maybe a green and black paint job would look nice on a 1500. Anyway, nice job.
I am putting the orange part back on. I was in a hurry and just threw it together, so I could test fire it. But thanks on the input for the paint job.