"I ordered this for my Bushmaster M4 because I didn't want to attach alot of accessories so a quad rail would have been overkill. I got it with a CAA vertical grip which worked perfectly. The size of this rail is great to attach a single accessory with no wasted rail space and no bulky rail covers for unused portions. I plan on getting another one to mount a laser sight in front of the grip. It installed easy without having to remove the heat shield from my handguard and seems pretty sturdy."
"Ditto on what the other guy said. Fits well, does the job. Made in Isreal."
"I bought one of these to mount a vertical foregrip (ProMag PM007). Both are an excellent combination. The fit is very snug; no play or slop. This rail is the minimal size for the foregrip base and the crosscut is perfectly located for the foregrip set screw. Mounting was easy. Removed the lower handguard and used a screwdriver to pop the heat shield out. (Mounting screws were not long enough to mount through heat shield.) Attached the rail in the 3rd and 4th holes from the rear and slipped heat shield back in. It had no problem fitting over the screwheads, but if you wanted to mount in the 1st or 2nd holes from the rear, and your heat shield is like mine and doesn't have holes there, you would need to drill some material out of the heat shield to fit over the screw heads.Note: The screws in this item (SRB) are spaced 11/16\" apart on center. If your handguard has 5/8\" hole spacing, buy the Command Arms Accessories SRA. Same thing, different hole spacing."