these are made by NcSTAR. Are very good quality. Me and my buddy got these to mount on the bottom of a Magpul MOE Handguard. These definitely do not fit right. They are too long by maybe 1/2 inch and are slanted. Magpul MOE sits perfectly straight, and the standard carbine rail would have a slant. Good priduct, but CTD needs to update their product description since it did not fit for many reviews on here

Just got the rails 15 minutes ago from Fed Ex and I have them installed already!! I have a R1 model STAG ARMS M4 Carbine with round type fore grip. Unlike many others that had to do some fabricating, I was finally the lucky one to get a perfect fit. The rails are very nice and durable, not to good to be true, they are cheap. BUY IT!!

I recently purchased a bushmaster ar-15. Wanting to dress it up a bit, I bought a Harris bi-pod. I'll tell ya this, I'm new to rifles of any sort. I was able to fit the rail properly on the front end grip with little help and no extra tools, I was able to get it attatched. It mounted up great under the heat shield and held the bi-pod adater firm. I would recommend this product to anyone not having the money for quad-rail. Thanks CTD.

This is an Awsome part. I put them on my S&W M&P 15 and they fit great. to those who have bought them and say they dont fit, they didnt do it right. make sure that they are flipped over the right way and you WILL have to take the heat shields off to get them on but after you get them on they heat shields will go back on. I am a former U.S. Army armorer and take my word for it. they are better then the ones we used and i WILL recommend these to others!

I installed these on my m&p15 the holes didn't line up.Stay away go for a better quality set of rails.

Received mine and tried to install them. The holes don't line up wi the DPMS Carbine Handrails holes. The quality appears to be top notch and should work great, but don't fit my rifle. The mounting holes are off by about 1/4".

Wrote a earlier review as the Mount didn't quite fit correctly, but other wise appear to be of good quality. Well after a little fudging and grinding, I now have it installed and boy is it nice. Fits like a glove and works very nicely. Would buy again and recommend to others. Just remember it may require a little mod for fit.

These rails are pretty decent if your tryin to build a tactical M-4 on a bugget. I just put a set of these on my cousins M&P 15. fits really nice, just a little bulky looking. an these do sit a little higher then the rial on the reciever!! I seen alot of people sayin how the screws wernt long enough or whatever, I found that by poppin the heat sheilds off that I had no problems at all!! So all in all, not a bad product... but my advice is spend the extra money an get the actuall quad rail.

I suggest not using the lock nuts that come with the rails. This will give you more threads.I little lock tight will keep from backing off. If you decide to use the lock washers you could strip the screws.I only got 2 threads in cause screws were to short. Stag model 3L

Quality is good but won't fit DPMS A2 without mods. Web site says picatinny but box I received stated weaver rails. Not sure if they are even weavers. Returned for refund.

I GOT THESE FOR MY H&K 12 GA AND IT WITH WITH VERY LITTLE MODIFICATION, GREAT PRODUCT FOR THE CHEAP PRICE.

Fits on the Bushmaster Texas M4. Does not fit on our DPMS AR15 A2. Screws are too short for the Texas M4, had to find replacement screws. Otherwise, decent product.

This item was perfect for our needs! When adding rails on a budget, this item is top shelf. Simply remove the handgaurd, attack these and instant rails. The only issue one should be aware of is, if you have a flatop receiver, the rails are higher than your natural receiver rail-line. I found this true on the second AR we attemped them on. A great price for a great product!

The rails are fine, but I did have to do a little modification to make them fit my Arizona Armory M4. The screws came up about 1/8" short. A little grinder work and a tap with a punch and they fit just fine. No problem with hole alignment. They are very solid now and will do the job just fine.

This is a quality product but it is not universal to M4 Handguards. On a standard DPMS bulky plastic M4 handguard set the lower underside locking fitting doesn't fit without either removing material from the cooling fins of the handguard or cutting away some of the fitting so it will fit down within the handguard. The rail is totally not compatible with the Stag or Rock River slimline M4 handguards with the metal heat shields. First the rail is too wide for the rail grooves in the handguard. Second the rail locking fittings are too large for the air holes. Third the bolts are too short to mate. I didn't find any handguard set where the rail fit without some smithing.

This is the perfect item for your carbine, if your not ready to commit to the quad rail yet. Fits great on my double star and makes it look mean.

very good deal i modfied maverick 88 and hi-pont 995 and than i add forends love them

Worked great on my S&W M&P15 OR. Mounted a Mako foregrip with a Surefire 6P integrated onto the front, no issues at all.

These fit like a glove on my M&P15R. The only thing I didnt like was that they are easy to crossthread while assembeling. (prolly my fault) Just had to go to the local hardware store to get new pieces. But anyway, they fit well and hold tight... Use some blue LocTight.

Fit perfectly on my Stag M1, took all of 5 minutes. Rails are designed for the 'fat' M4 profile hand guard and are cut at the angle to match to sit perpendicular to the bore. Not sure if they will fit perfectly with a 'car' style hand guard. Some that have fit issues might be from those with different hand guards.

Pros: cheap, works great, easy to install Cons: just a bolt on I got this set for my Bushmaster XM15 with the 16" barrel. I went with this set of rails because I wasnt ready to buy a full handguard rail system. As previously stated in other reviews, each set of handguards and heat shields are a little different. I managed to work my heatshields off with a pair of long needle nose pliers. The rails went on without a hitch. They sit about 1/8" forward on my grips so they arent perfectly flush with the front and back. But for the price, I could care less. Also, I was concerned with how snug they would be and if they would be loose at all but they are holding strong so far. This is one of those times you definitely get more than you pay for. This offer is a steal and a great alternative for anyone wanting a full rail system or a temporary fix until they get one.

I ordered these rails so I could put one on my Colt Lightweight. I mounted the first rail on the Colt, slid on a vertical grip and was ready to shoot. I had the second rail so I started to look for something to do with it. It didn't take long to find a place to put it. My MAK-90 has a Fiberforce Dragunov stock and forearm. With about two minutes of work with a half round file I opened up two of the vents enough to mount the second rail on the upper hand guard. The rail mounted very solid, a tactical light mounted quickly and holds fast when the rifle is fired. Thanks CTD two great rails for the price of one!

Good product. Rails are solid aluminum with good weight to them. Adjustable mounts to fit different manufacture handguards. They are actually slanted to counteract the slant of the handguard which I found to be a good feature. Just pop heat shield out to mount. I had to put reinstall on the rifle to fully tighten so don't get frustrated.

these are exactly what i thought theyd be. i have a DPMS AP4 and after about tweny min carving out the heat shield the holes lined up and went together nicely. the delta ring tool is an absolute must for saving your fingers and sanity

Worked well had to trim hand guard holes a little ,stayed tight

These turned out be better than I thought. I needed just one rail to install a fore grip on my S&W M&P15A . Installed fairly easy (most of my time was spent with the delta ring). I would definitely recommend this just from a price standpoint.

Great for upgrading your standard AR forearm to a more tactical platform without spending the money on a whole new handrail! I did re-thread the plates with a little bit beefier set screw. The included ones would have probably worked (but the plates are aluminum) and I wanted accomodate a forward pistol grip and tac light with no hassles in the field. Didn't even attach the second plate (heat dispersion issues?) but it will sit in my "gun box" with my other toys untill I find another project for it! :)

These are some really nice rails, but only needed one. Had to finagle it a little bit to line up with the holes on my S&W M&P15A but once I did they lined right up. Took me about 25 mins. to install, with about 20 mins of that removing and reinstalling the lower hand guard by myself. This is a real good value so far.

I wanted to add a rail to the lower handguard on my Bushmaster Patrolman's Carbine (M-4). These rails - I actually only used one from the set - worked well. I'm not sure how well they'd work for mounting lasers or sights, since they might shift slightly with use, but they work just as well as much more expensive rails for mounting lights and vertical grips. Hey, they even look good. Installation was simple. First I removed the lower handguard, carefully pried up one side of the aluminum heat shield, and slid the flat-topped nuts (included) under the shield so that they fit into the holes in the plastic portion of the handguard. Then I placed the rail onto the outside of the handguard, put the mounting bolts through the pre-drilled holes in the rail - and the holes in the handguard - into the nuts and tightened them with a hex (Allen) wrench. After that, I replaced the handguard on the rifle. Done! If you are sure that you want to leave the rail in place, it's a good idea to add some thread locking compound (LocTite, etc.) to the threads when you install the rail to keep the bolts from loosening under repeated recoil. Overall, these rails are a good product at a great price.

Mounted on my Bushmaster AR and used them for a grip and a laser. Very nice, screws seem a little short but over all very nice....

These rails are great. Fitting nice and snug on the handguard of my M4. Installation for me was a bit of a problem though. I didn't know exactly how it was supposed to be done with no instruction manual to guide me. Drilling may be necessary to fit as some holes dont align for screws. I didn't want do that so I just used different screws than the ones provided(I really couldn't figure it out), but after all was done, it was a big sigh of relief and satisfaction.

these were worth purchasing. they were (fairly) easy to install and they allowed me to finally attach that foregrip and bipod I have been waiting to attach for so long. They do their job well and you just can't beat CTD's prices!

I purchased this item after reading about all of the positive comments about its ease of installation, price, and most of all quality. The rails fit on my M&P 15 with ease (with a little help from my girlfriend) and are of excellent quality. Sure beat the price of spending 100+ on a custom handguard set or quad rail. I also purchased Forend Grip Black (Arr-073) and it was a perfect tandem. Thanks to all previous reviewers for their insight.

When these rails arrived I noticed that they were slightly tapered and would not fit the predefined channel on my stock High Standard AR-15 M4 foregrips; nor did the inserts fit the holes. My solution was to use a drill to slightly enlarge the holes and a belt sander to sand the channel on the foregrip flat. No problem after that and I was even able to re-insert the heat shield afterwards. The quality of the rails is quite good and they work fine for my vertical grip.

These rails fit perfect on my Colt 6" handguards and are rock solid, no modifications or extra holes needed to be drilled. It did not work on my Model1Sales 6" handguards. The width of the handguards where the rails mount are too narrow on one end. The rails are tapered for I guess milspec handguards and the Model1Sales and maybe other aftermarket handguards are not quite to spec. For the price I give this a 5, but if you are using non milspec handguards it may need some mods or mod to the handguard.

Great Rails for the cost. Get two rails for the price of one. Easy mounting and a strong and sturdy mounting platform. Will defiantly buy again for next rifle.

Awsome Rails...You get 2 for 1...what a deal. I had um on in about an hour. And, that is because this is my first AR-15 and didn't know that you had to take the handguards off first...lol. I just had a hard time attatching them. But, once I got um on...Wow!!! I am very pleased!

got the items today and had them on in less than 5 mins with the forearm tool i got here. they work great, nice and tight no troubles 1 happy camper!! you cant beat the price for 2 mounts!!!

GREAT RAILS FOR MY DPMS M4 GAURDS. THIS IS TWO, ONE FOR TOP AND THE BOTTOM. BEATS $30 TO $40 0N SOME BRANDS. ALL YOU DO IS REMOVE GAURDS AND THE HEAT SHIELD AND FASTEN THEM WITH THE HARDWARE THAT COMES WITH IT. GREAT PRODUCT, WOULD RECOMMEND.

These are simple, durable and effective. Angled to counter the HG taper so your lights or laser match point of impact with minimal adjustments. If you only use two of the supplied mounts you will still have adequate ventilation for cooling of the barrel. Don't block your HG vent holes !!!!

These rails are awsome!!! Comes with 2 rails, screws, nuts, allen wrench, and swivel screw. This package + Front Grip = under $20!!! Do yourself a favor and just get'em.

THIS IS A GREAT PRODUCT. I INSTALLED ONE RAIL ON TOP AND ANOTHER ON BOTTOM. THEY ARE VERY STURDY AND WORK VERY WELL.

I got these for my AR-15 M4 & They installed in mins.Great quality,Good Looks.You'll love them.

These are high quility metal rails. Not the cheap plastic kind that are not up specs. The rails themselves are very easy to instal and no directions are needed. The only problem you may have is with your particular rifles handguard set up, i.e. the number of inner heatshields and how easy the can be removed and replaced. So in all I am very happy with this product and will buy more for other rifles.

Excellent quality metal rails fits carbine fore-end since they are shorter 6" style. Comes with 3 sets of mounting hardware not just two.

This is a very nice product at a great price. You can add rails very easily and inexpensively. If you don't have the "delta" wrench for holding down the delta ring, removing the 2-piece handguards is difficult. Buy a wrench from CTD. If your stock handguard has the aluminum shields, be careful removing them. Some snap into place, while others have holes that push onto small, cylindrical tabs. There may be other arrangements. Just be careful removing the shields as they are thin and soft. You have to remove them to mount the rail screws.