RPTR M-Lok Free Float Handguard 15" - AR15/M4

  • Backed by our Swarm Lifetime Warranty

    1. Best of both worlds.  The RPTR is the perfect combination of each of the benefits found in both traditional quad rails and M-Lok handguards. Integrated rail sections on the front of the handguard allow you to install various picatinny accessories ranging from bipods to lights without the need to purchase extra adapters. The M-Lok body of the rail serves to significantly reduce weight while allowing you to attach accessories at a much lower profile than standard picatinny allows.
    2. Effortless install. Absolutely no barrel nut timing required. In addition to being incredibly easy to install, the system developed also solves the biggest problem faced by handguards today – unwanted slipping. By engineering an anti-plate that locks the handguard to the barrel nut, your handguard physically won’t be able to slide off no matter how hard you run it. No Loctite needed.
    3. Ready for every condition. Any time. Anywhere. Exceptionally rugged and built to last a lifetime. Every rail is meticulously designed to excel under any mission it undergoes. 

    Free Shipping. Texas Company. Proudly Made In USA.

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    1. Includes:(1) 1 3/16" Crowfoot wrench (1/2" drive) for easy install,(1) Anti-slide plate, (1) Barrel nut, (2) Allen screws, (1) Allen key, (1) RPTR 15" M-Lok rail
    2. Handguard Material: T6-6061 Type III hard coat anodized aluminum
    3. Barrel Nut Material: Aluminum (steel version available here)
    4. Gas Block: Works with low profile and adjustable gas blocks
    5. Compatibility: For use on AR-15 & M4 variants (223, 300blk & 556) *Modification is required to fit with billet uppers. 
    6. Quick Detach:2 locking QD mounts (2 at the rear)
    7. Rail Weight: 11.64 ounces
    8. Barrel Nut Weight: 1.40 ounces
    9. Inside Diameter (ID): 1.35"
    10. ID + Top Gas Tube Channel: 1.70"
    11. Length: 15.0"
    12. Color: Black (Only available colorway at this time)
    13. M-Lok: Officially Licensed M-Lok From Magpul
    14. Made In USA
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    You qualify for free shipping!

    This rail ships with free  UPS Ground.

    Estimated Delivery Times:

    United States: UPS Ground (1-5 Days), FREE
    United States: UPS 3 Day Select (3 Days)
    United States: UPS 2nd Day Air (2 Days)
    United States: UPS Next Day Air (1 Day)

    *Due to numerous laws and regulations surrounding the firearm industry, we are not allowed to ship internationally. We apologize for the inconvenience.

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Swarm Warranty - You're Covered FOR LIFE

As a member of the STNGR Swarm, we promise you two things: 

1) An Unlimited Lifetime Warranty on all purchases

2) A 100% Forever Satisfaction Guarantee or your money back.  

If anything ever happens, we will fix it or give you a brand new replacement at no extra cost to you.

Not happy with your order? You can return it - whenever you want. 

It doesn't matter who did it, how it happened, or why you don't like it, you're one of us and we take care of our own. 


Customer Reviews

Based on 51 reviews
The upgrade

Got so many compliments already love it especially the price

Great Affordable Rail

I have done two builds with STNGR rails. For my 224 Valkyrie build I went with the RPTR because I want to have a picatinny rail integrated into the bottom front of the rail. Event with a long heavy 24" barrel there is no deflection of the rail while on the bipod. Great product at a great price.


This is awesome, affordable, and a solid product. Love it and when other builds come, these rails will be on them.


Order came in a timely manner, even for over sea shipping. Product clean and built well. Very easy to install.

RPTR M-Lok Free Float Handguard 15" - AR15/M4

This handguard is awesome! Great fit and finish! Very pleased with this purchase and will be ordering again soon. Thanks for a great product! STNGR ROCKS!

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Let customers speak for us

1984 reviews

Awesome handguard!!

Hawk hand guard

Easy to install, no timing needed. Looks great on my AR. I will buying another. Quality materials

Fantastic product

The hand guard fits perfectly and was really easy to install and had a nice finish on it

Very nice looking item, smoothed edges, Magpul front sight fit well and the quick disconnect in t...

Very nice looking item, smoothed edges, Magpul front sight fit well and the quick disconnect in the back for the sling doesn't allow the sling loop to rotate more than +- approx 10 degrees, Nice not rotating 360 and getting the sling all twisted. The front quick disconnect hole however doesn't have that feature and is thinner and the quick disconnect flops in that hole in and out as there isn't much meat on that hole. It is just a hole, no cut aways for the ball bearings to sit in like the back one. Maybe get one of those top rail QD !!

Too easy

Install went smooth, fitment and performance where spot on, no problem