Home Parts & Accessories Parts By Gun Model AR-15 Handguards and Rail Systems Add On Rails Command Arms Accessories AR-15 Three Rail Mounting System Polymer Black TRM3
Command Arms Accessories AR-15 Three Rail Mounting System Polymer Black TRM3
Typically ships within 1 to 2 business days.
The Command Arms Accessories three rail mounting system fits most AR15/M16 handgaurds. This versatile polymer three rail mount system consists of a single 3" Picatinny rail and Two 2.5" rails at 45 angles. Allows easy tactical light operation while using a vertical grip and light mount, and the rails can be used independently of each other.
Specifications and Features:
No gunsmithing required
Weight: 0.20 lbs
Specifications and Features:
No gunsmithing required
Weight: 0.20 lbs
Total number of Reviews: 21
"The rail is sturdy and comes with all of the hardware. However, it not fit my DPMS stock handguards with the screws supplied. B/C it doesn't cradle the habdguards, the screws are to short. I used #10-32 1\" screws along with #10 washers. The washers fit over the holes in the handgaurd and allowed the screws to reach the rail. Once i got them on I tighted the rail to conform to the shape of the handgaurd with no problems. It is very sturdy and now has a flaslight. Recommeded for those who want an inexpensive rail for a light and handle."
"This is strike two for me and Command Arms. I bought this product because I thought it would be a good alternative to full quad rails. First off, it feels like cheap plastic. Second, it was to skinny to fit the handrails on my AR, and the screws were too short. you would be better off saving up for real rails."
"Um, you are supposed to install the screws underneath the heat shield. Remove the heat shield, install the mount, then reinstall the heat shield. Been seeing a lot of folks not installing correctly. Yes, it is plastic, so I don't recommend putting a sling swivel on it, but is good for lights, etc. (not a good idea to mount a metal mount of this style onto a plastic handguard). Is 1913 spec."
"This is a tight fit. I see the reviews where other purchasers say the screws don't fit. It just takes a little pressure on the rail to compress to the handguard. Fits great and really sturdy. It was frustrating at first because of the close tolerance, but it pays off. Have used it now for over three months. Supports a Grip pod and a Command Arms weapon light mount. No problems."
– John S
"It's great for the price. Yes, it is made out of plastic, really strong plastic. You can make it fit on almost any AR. I had to sand down the spots that the bolts go through. It would of been nice if they did supply some instrucions with it."
– The Welder
"This item was fairly easily mounted to my Armailte AR-15 carbine (M4 style rifle), though I had to turn rail and forearm half upside down and press down into the nut to secure it. I also found it easier to take the longer bolt and start threading the nut onto it and pull the bolt back inside the forearm seating the nut before trying to mount it to the forearm its self. The grooves lined up just right on the forearm and the rig appears to be very stable. If my long picatinny rails don't work out I'll be putting another one of these on the bottom half as well. With a little finagling even a redneck like me could do it.. Just takes a little time.. Be prepared to set about 5-10 minutes apart for the installation of this item.. I'd highly recommend it."
"Only problem is it doesnt fit the top grooves very well, it also will only fit the front of your guards so you cant pull it closer to have your hands out further. It did fit fine though, you dont have to drill through the metal guards like some say and the screws are fine, not to short. You just have to lay it on something hard and press down on screw furthest to front when you install. the rest will fit with ease. The plastic its made of is VERY strong so dont be alarmed that it will break. I strongly recomend it if you want a cheaper alternitave to the rails plus you have it at an angle not top or sides. Could use some instructions to let you know about placement though."
"On my Bushmaster M4A3Like the other guy said, It fits ONLY on the FORWARD part. Tight, very tight fit. You'll have to get the screws past the aluminum heat shield inside the forward grip, then press HARD down to get the screws to get a grip, then tighten lke you would a tire on your car, one screw a little at a time. This WILL make your grip shaped differently and you'll have a hard time getting things back to normal...but a little push and pull and sqeezing, you'll get it done. NO INSTRUCTIONS with order.Very hard plastic, I didn't want an entire forward with rails so this worked good. I used a pair of drumsticks to hold down the spring loaded part to get the griops off, along with my wife for the required extra hands, worked great."
"I ordered this based on the decent reviews, thinking that even if it wasn't perfect I'd be able to make it work. Well, I've dremeled and sanded the snot out of this thing, and I CANNOT make it work on BCM M4-style oval handguards using the short screws. I can make it work somewhat with the longer screws, but only at the very rear of the handguard, and not with the middle rail installed - so the screws are A) sticking up from the nut and snag on stuff and B) they are crooked because the holes do not line up AT ALL with the holes in the handguard and pull the screws to an odd angle. Long story short, this thing must have been designed for the carbine handguards, not the M4 handguards. Buyer beware, this thing is cheap for a reason."
"I ordered this rail mount to go on my DPMS Panther AR-15 Classic for two attachments I already owned. I am pleased that I did not have to replace my entire forearm casing. The only disappointment I had was the actual dimensions are alot smaller than what the schematic depicts. The overall length is only about 3 inches but it was enough for me to attach my bipod and vertical hand grip. There were no instructions but all I had to do was remove the lower half of the existing forearm case and the heat shield inside. Once that was removed there was less space between the bolt and nut. Pressing down really hard and screwing in the screws at the same time I was able to connect the rail mount with the longer screws. I was able to attach all pieces, including the middle extension. It did not take too long to install and all the attachments are secure. Overall this is not a bad product for the price, a good alternative to ordering a new forearm case."
– Joe G
"Gave it one bullet because I could not give it a lower score should be in the -ve. First off, it's cheap plastic. Second, it did not fit the handrails on my 4 AR's neither the oval M4 type or the standard round type,also the screws which there are numerous were too short. Overall its junk and CAA uses air soft rubbish and pass it off as the real thing. They are conning us and retailers and CAA should be renamed Con Artists of America."
"This product is very misleading. The description makes it sound like it will work with virtually any hand guard with even the thickest heat shields. Well, I can tell you that I tinkered with this thing for hours with my Stag carbine and Rock River mid, and it absolutely does not fit either on any part of the hand guard. The holes don't match up, and the contour of the mount doesn't even come close enough to get the screws in there. Maybe there are some hand guards out there that it fits on (probably CAA ones), but replacing hand guards to accommodate this thing is ridiculous. Might as well just buy quad rails and be done with it."
"I bought this for my DPMS AR-15 AP4 model. It comes with three rails. Two on the sides and an optional middle rail. To get mine to fit tight I used the longer screws without the optional rail first. Once I got it to fit I changed out the long screws with the short screws one at a time. I am using the 2 rails on the top of my stock forend and the 3rd on the bottom. Looks great and can't wait to try out my light and laser combo. I would recommend this of anyone with the same rifle I have. Great price as well. Thanks CTD!"
– Falcon Basic
"I gave this product 4 bullets. It is Cheap with good construction and installation was fairly easy. This is a quick way to add some dress up. The only negative is that this was a bit shorter than I wanted. I Installed this on Bushmaster M-4 Carbine. The side rails are for compact light and laser combo with pressure switch mounted on vertical grip on the bottom rail. This is working very well"
"Followed James's advice and used the long screws, tightening each one just a bit each time. First without the 3rd rail, then with. Be patient, it didn't fit quite right the first time. Fit a lot better on the second attempt. Ended up working out okay on my Double Star. If you're on a budget and not looking for combat ready, it should work just fine as long as your holes match up. At least it did on mine, which has a pretty standard forearm."
"This mount looked good and the price was right but I could not get it to fit on my DPMS M4. The screws were too short and the contour did not match up. I spent an hour or so trying to get it to work and finally gave up. Mako should include both short and long screws to account for different handguards."
– Rob K.
"Thanks to other reviewers: We would have assumed that there was a no-fit excerpt from your input. The rail seems well designed, formed with a slight bend to the circumference acting as a spring, keeping the mounts in tension to prevent loosening. We mounted the center rail along with the main assembly, which required the use of the three (3) longer screws and one (1) short screw.We first inserted the four nuts into the recesses in the center rail, pushing them in tightly (running a screw through each from the other side will help to seat them, but be sure they're positioned correctly first).The rail has three bosses in the main body. The fourth hole protrudes to the rear; that end of the casting has a larger diameter and must be positioned toward the magazine. Attach the center rail to the main rail assembly at the rearmost hole using a short bolt. You'll have to squeeze the two parts together and tighten it down well.Put the butt of your AR on the floor and push the handguard retainer ring down towards the magazine, while pulling out the magazine end of the handguard. (We only took out the lower guard since we wanted to mount the rail on the lower.) Having a second set of hands makes it a lot easier.Pull out both heat shields to avoid damaging them. Align the front end of the rail with the front edge of the grip surface; it won't fit anywhere but the front. Don't try to overlap the smaller diameter retainer ring or you'll not be able to get the guard back on the AR later.Put the half guard in a vice with the rail assembly positioned for mounting. Allow keep enough of the guard and rail above the vice jaws to allow you to get a phillips driver into at least one of the heads; two is better. Tighten the flat jaws slowly, taking care to use only enough force to seat the rail flush with the surface of the guard. Insert and tighten the screws a bit at a time until fully torqued. Push a nail set or similar tool onto the nut from the rear as you apply pre...."
– CD Rebel
"So yeah i tried to put this on my new stag AR-15 and it was 1/4 inch off. i tried pressing it on the plastic was too hard. then i had to take a dremel tool with a sandpaper wheel and grind 1/4 inch off the inside of each side of the tactical rail. when i mean rail i mean the thing i just paid 19 dollars for. Then it fit on no problems. The angle is off a hair. I mean a hair but it works and looks great. I wish i wouldn't have had to modify this thing to make it work but I am a cheapo and didn't want to pay for shipping to send it back. I don't recommend this to anyone. go to a gun store or gunsmith and have a real one ordered and put on. cheap isn't always better."
"Got this to mount on my S&W M&P 15. I had a Leapers quad rail on it, but thought I'd try this because it weighs quite a bit less. Im quite happy with it, installation was a little.... weird. You have to push the rail onto the fore-grip with a lot of pressure. The screws actually slid between my heat shield and the plastic grip itself. Overall it wasn't too difficult, I didn't need to modify anything or use any special tools. Its a definite lightweight alternative unless you need all of those rails. I mounted a grip and a laser - they fit very well and are sturdy. The other side will easily accommodate a flashlight."
"Does not fit moe hand guards. Does not sit level. Worthless."
– jason marshall
"I bought this piece to keep from buying a whole new hand guard that has the rails built in for my DPMS Lite 20, and it fits great with no problems. I took the bottom guard off, removed the heat shield, attached the rail system, replaced the heat shield, and replaced the guard with no effort whatsoever. I would buy this part again and just so everyone knows this piece is made of plastic which means to me less weight."