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Questions & Answers
With a 14.5 inch barrel and surefire warcomp muzzle device will this block a suppressor from mounting properly? Expert Answer

The Phase 5 Weapon Systems Inc Lo-Pro Slope Nose Free Float Quad Rail has an internal diameter of 1.35". So whether or not the suppressor would fit this rail would depend on the outside diameter of the suppressor you are using.

by Hunter, Gear Expert, June 24, 2022
Will the Phase 5 Weapon Systems Littleboy Hex Brake fit with a 16” barrel? Expert Answer

The Phase 5 Weapon Systems Inc Lo-Pro Slope Nose Free Float Quad Rail has an internal diameter of 1.35", while the LittleBoy Hexbrake has an outer diameter of 1.26". So it will fit within this handguard and function as intended.

by Ethan, Gear Expert, April 19, 2022
Customer Reviews
Most Recent Reviews
Phase 5 handgaurd by Midwest, March 21, 2021
Quality product, amazing look unlike any other. I liked this product so much that I ended up buying another. Holes on handgaurd line up to barrel nut easier than other handgaurd a that I’ve used. This is a must buy.
Most Recent Reviews
Phase 5, 15inch handguard. by HomeDefender, April 1, 2020
This handguard is lightweight, easy to install and it looks great. I was able to mount a weapon light about the barrel and have enough space for my iron sights and optic as well. Fits great in hand. Would like to see more direct attachment acces...
Read More...
Most Recent Reviews
Best quad rail ever by Takoda, Verified Owner, August 19, 2019
This is my first quad rail on my rifle build and it looks and functions amazingly. Phase 5 was defiantly worth the purchase. Currently have a weapon light mounted and soon to have a forward grip mounted as well.
Most Recent Reviews
Great Handguard by JD, May 15, 2019
This handguard just looks badass. I have both versions of this and both are awesome. I’ve used this handguard on a few builds now, and I’ll continue to buy more for new builds. Opticsplanet usually has the best deals on these - especially if you can ...
Read More...
Read All 4 Reviews

Product Discontinued by Manufacturer

Phase 5 Weapon Systems Inc Lo-Pro Slope Nose Free Float Quad Rail, 15 in has been discontinued by Phase 5 Weapon Systems Inc and is no longer available. Our product experts have helped us select these available replacements below.You can also explore other items in the AR15 Accessories, Gun Parts, AR 15 Tactical Rails, AR 15 Parts, Rifle Parts, AR Handguards & Forends, AR15 Upper Parts yourself to try and find the perfect replacement for you!

Product Info for Phase 5 Weapon Systems Inc Lo-Pro Slope Nose Free Float Quad Rail, 15 in

The LPSN15 was developed to accommodate the features of our 7.5in LPSN quad rail to a longer 15in version. The LPSN15 was inspired by lots of beneficial features that shooters have requested and demanded from us and other manufacturers. The slender design, longer nose, ease of installation and superior construction are some of the features that we designed into this system. Another development feature is the finish quality. The LPSN undergoes a rigorous extra de-burring process in order to ensure a smoother snag free finish. The details and level of care during the manufacturing of the LPSN15 make it the perfect choice for any rifle. Built-in QD mounts with internal stops. Inner diameter: 1.35in. Not compatible with .308image

Specifications for Phase 5 Weapon Systems Inc Lo-Pro Slope Nose Free Float Quad Rail 15 Inch LPSN15:

Mfg Item Num:  LPSN15
Type:  ACCESSORIES - GUN ACCESSORIES - HANDGUARDS
Color:  Black
Model Header:  15 Inch
Master Model Header:  Lo-Pro Slope Nose Free Float Quad Rail

Features of Phase 5 Weapon Systems Inc Lo-Pro Slope Nose Free Float Quad Rail 15 Inch LPSN15:

  • Built-in QD mounts with internal stops.
  • Inner diameter: 1.35"
  • Overall Length:15 inches
  • Built-in QD mounts with internal stops
  • 6061 T6 aluminum
  • Low Profile sleek design
  • Light weight for improved mobility
  • Type III Hard Anodized Mil-Spec finish (black)
  • Not compatible with .308

Package Contents:

  • Phase 5 Weapon Systems Inc Lo-Pro Slope Nose Free Float Quad Rail 15 Inch LPSN15
  • Barrel Nut and Mounting Hardware

Firearm Case

140 / 40
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AR Handguard/Forend Screws

124 / 24
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Related Products to Phase 5 Weapon Systems Inc Lo-Pro Slope Nose Free Float Quad Rail, 15 in

Phase 5 Weapon Systems Inc Lo-Pro Slope Nose Free Float Quad Rail, 15 in Unavailable & Discontinued Models

List of Unorderable Models

  • Phase 5 Weapon Systems Inc Lo-Pro Slope Nose Free Float Quad Rail 15 Inch , MPN: LPSN15 , UPC: 813318021458 , Code: 1U8-HZ-LPSN15
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