Buyer Beware - DBAL D2 cannot take a shotgun recoil. It has broken on me twice. It took me about 40 rounds of 3.5 dead coyote T shot and number 4's for it to break. After shooting it multiple times and you focuse the lens it pops out inside and makes a rattle noise. The inside illuniator lens comes loose and then distorts the illuminator so it does not focus or line up properly with the IR pointer.
Laser Devices Customer Service was ok on the first repair (about 3 weeks total with shipping at my cost -Should have sent me a brand new unit) but refused to tell me how they fixed the unit, or if they replaced it. What I did learn from them is they did not field test it on a shotgun and are thinking about conducting tests with simulator recoil machine. Also, that means the new upcoming spir will also have problems if you plan on using it on a shotgun.
On the second repair issue, Laser devices refused to respond to any emails, return calls, extend any warranty on the device nor would they except a swap for a different model unit. I am in the process of returning the unit to TNVC.
Looks like I will have to go towards the I2 and a 65$ eagle tac IR in order to take the shotgun recoil.
If anyone else has tried the DBAL d2 on the shotgun with multiple rounds please post and let everyone know your results. Its unfortunate because it was the best setup for the shotgun at night.