SureFire DSF-870 Ultra-High Two-Output-Mode LED WeaponLight for Remington 870 , Black

I purchased this light for my personal 870P. The "day job" shotguns have a variety of older Surefire lights (618LMGs et al) and my only criticism of the older versions is the "bulk" of the gripping area. The DSF-870 has a somewhat slimmer profile and is, I think, a more solidly-built improvement over those versions. I will likely replace the older lights on agency shotguns with these as the older ones go out-of-service (which means, generally speaking, "not for a while," since even the old ones are built like tanks.) Unlike earlier iterations, this model is ambidextrous and both left- or right-handed shooters have used mine with no issues. The slimmer overall profile keeps your support hand closer to the bore axis than earlier models (or competitor's models like the Eotech forends) which you'll appreciate if you're transitioning to this from a "naked" 870 forend. It results in the shotgun pointing more naturally than with some of the bulkier options. High-output is great if you're contemplating using it outdoors. Indoors, the "bounce back" from white walls be problematic (imagine 600 lumens reflected back at you, in a dark room, at a time when you most need your night vision intact.) Try both modes, but know that the low mode is probably more than enough for indoor or home-defense use. Installation will require a forend wrench. Surefire includes a small one with the product. Alignment matters; if you install it yourself, make sure when you crank down on the locking ring that the forend is straight, otherwise, you might experience some binding when you cycle the action. The battery-drain issue noted in the early units appears to have been corrected. This is just a good, all-around, effective piece of equipment. I'm trying to find something to be critical of, but really can't.

This completes the tactical shotgun. It has a mean look and the light is blinding. It alone might fend off an intruder. It is an expensive accessory. I feel it is worth the money. Very well made. One thing to note is that the shotgun must be partially disassembled to install it. If you don't feel comfortable with that have a gunsmith install it. I would also reccomend not over tightening the cylinder that holds it on the slide rails. If you do it will case the slide to bind.

This is a great light. Everyone wants ultra bright now. Indoors, brightest isn't best. Some suggest this should be brighter for the cost. I disagree. I bought the SureFire model because of the availability of a 200 lumen mode. I also like the alternative switches for tap on and press on. The lockout switch is great too. It's too heavy for what it is. Somehow the weight could probably be improved and still be durable enough for recoil. The primary problem though is the grip. It's a bit short and not quite textured enough for a solid grip. Texturing reminiscent of a traditional corn cob stock would be awesome as well as a longer grip area.

If you're on the fence about this I would not hesitate to purchase this. I researched many different ways of mounting a light and this one was perfect for my set up. Its controls are very intuitive and its incredibly bright. However the one bad thing I discovered was there is a split along the "seam" near the controls. It doesn't hurt its function but I don't know how it will hold up over time if it ever gets wet.

I have several SureFire weapon lights for my shotguns, AR-15's. They're all high quality. Not cheap, but excellent value. The DSF is the 2nd generation of shotgun light that I've used. The older ones were good - these are outstanding. A bit lighter, just as well made. Easy to install, and they brighten up the night like you're standing in the noon day sun. 600 lumens is pretty bright.

but I had to whittle the inside of the piece a little to keep it from sticking in the retract position.

So I was terrified of the whole battery drain issue. Who wants a light for defense that might be off if you leave the rocker switch on. It's on the bottom so it'll take maybe a second to activate but that second could mean all the difference in a home invasion. Did a lot digging into the internet and it seems that sure fire have addressed the problem. There is a new version of the light that has a very minimal drain as in a few years to cause issues with the battery which I can accept. You can tell if you have the new version by 2 methods. 1 - there is a serial number along the rim of the lens cover and 2 - you have the ability to change what the sets of button do i.e. change where the front/back buttons do constant or momentary on by holding the intensity selector (small button on the back on the left) with the rocker in the on position for 10 secs. I overall like the product's felt durable, have had it in the rocker on mode for about 2 weeks without battry drain. Only thing I would add would be a strobe mode. And if you brought and older version with the drain issue contact sure fire asap they should let you send it in for an upgrade to the new circuits.

can't rack the slide fully to the rear due to interference between this and the barrel. Have another one on my HD 870 and it fits. Like another reviewer observed, recoil will bite your index finger, but it's OK on my HD 870. Between that and the poor QC (the other DSF-870 I have has ~2mm additional clearance for the barrel,) not worth the premium price, IMO.