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AIM Sports Inc AR-15/M4 Handguard/Quad Rail
$39.99 $29.99 Save 25%
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Most Helpful Positive Review Fits a Bushmaster AR15 16" barrel
I bought this quad rail for a Bushmaster AR15 16" barrel based on the results of adding the same rail to an S&W M&P 15. The rail was easy to install (took about 5 minutes), no modifications to the rifle, and has remained snug and functional on the M&P just fine. I agree the rubber pads that come w...
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Most Helpful Negative Review Does not fit
Doesn't fit, openings are oval and the back piece that goes into the delta ring has no make piece to slip into the delta ring, also about a quarter inch longer than my other standard ones, idk if they sent me the wrong style but it does not fit on my delton or ruger ar556. Ok shipping though
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Hand guard

by Jim, Verified Owner from OH, United States Written on October 22, 2025
Poorly machined. Does not fit around barrel nut. I will have to do a lot of file to fit to get it to work.
Would recommend: No
Was it helpful to you? Yes | No

I bought a used one for $20

by SgtWood, Verified Owner from UT, United States Written on September 26, 2025
While it doesn't match the quality of the leapers UTG PRO Quad rail, it definitely beats the price and you can't even tell they are different when looking at both of my rifles
Pros:
  • Affordable
  • Quality for price
Cons:
  • None
Best Used for:
  • AR/M4 Carbine
Would recommend: Yes
Was it helpful to you? Yes | No

Great rail system

by Daniel Jarvis, Verified Owner from IN, United States Written on May 12, 2024
Works as described. Was very easy to mount and secure.
Would recommend: Yes
Was it helpful to you? Yes | No

Good Product

by Bobo, from TX, United States Written on March 21, 2024
I don't know about others but this quad rail fits perfectly into a S&W M&P AR-15. It fit perfectly without any modifications.
Would recommend: Yes
Was it helpful to you? Yes | No

Great quality for the price

by Tim Taylor, Verified Owner from TX, United States Written on March 15, 2024
This rail is high quality and I would recommend it for AR15 non-piston rifles. Unfortunately, it does not fit build that has a gas piston set-up. It should fit all others.
Pros:
  • High quality
Cons:
  • does not fit gas piston set-up
Would recommend: Yes
Was it helpful to you? Yes | No

M4 handrail

by Brad, from IA, United States Written on February 26, 2024
This is a great pic. Any handrail for your AR design it's made out of high-quality aluminum and fits perfect
Would recommend: Yes
Was it helpful to you? Yes | No

Picatinny slots are slightly off size

by Doc, Verified Owner from TN, United States Written on February 7, 2024
I have picatinny rail guards that fit every other rifle I own but not this hand guard. It’s a good product if you are not planning on using rail guards.
Would recommend: Yes
Was it helpful to you? Yes | No

Best quad rail m4 hand guard there is for sure

by Ant-man, Verified Owner from CA, United States Written on January 11, 2024
This quad rail for your m4 is perfect if you’re on a budget and looking for good quality.
Pros:
  • budget friendly
  • Good Quailty
Cons:
  • None
Would recommend: Yes
Was it helpful to you? Yes | No

Good rail for AR

by 2nd Amend, from FL, United States Written on December 27, 2023
Good rail for AR. Had to fiddle with it a little because all the parts I was dealing with were new & tight fitting, didn't need to remove any metal. It is a drop-in fit. Gives my AR that M4 look.
Would recommend: Yes
Was it helpful to you? Yes | No

Fits- with modification

by GK, Verified Owner from MI, United States Written on December 20, 2023
Bought this for my S&W M&P AR-15 to replace the plastic handguard. Tried installing it right out of the box but would not fit properly. I was going to send it back but upon closer inspection I saw it was hitting the barrel nut flange and not closing together properly. Fortunately I own a dremmel tool so I ground out a small portion of the interior of this handguard until it closed together and fit properly. A delta ring tool was an absolute must to have in this procedure because of trying to fit it all together so many times.
Pros:
  • Price
Cons:
  • fitting required grinding
Would recommend: Yes
Was it helpful to you? Yes | No
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