The ProMag Quad Rail Handguard (brand part number PM242) is a 2-piece polymer handguard built for the AR-15 carbine platform. ProMag molds the handguard from a high-impact, glass-filled nylon polymer and lines it with an integral aluminum heat shield insert, so it holds up to heat from sustained firing without becoming uncomfortable to hold. MIL-Spec Picatinny rail sections run at the 12, 3, 6, and 9 o’clock positions, giving shooters mounting space for sights, tactical lights, vertical grips, and other accessories all around the handguard. It’s a budget-friendly way to turn a stock AR-15 into a fully accessorized carbine.

Key Specifications

• 2-Piece Quad Rail Design installs without removing the barrel nut.
• MIL-Spec Rails at 12/3/6/9 O’Clock give mounting space for sights, lights, and grips all around the handguard.
• Glass-Filled Nylon Polymer Construction resists cracking and warping under hard use.
• Integral Aluminum Heat Shield Insert protects your hand from barrel heat during sustained fire.
• Black Finish matches most factory and aftermarket AR-15 builds.
• AR-15 Carbine-Length Fitment is sized for standard carbine-length gas systems.

Frequently Asked Questions

Does this fit a rifle-length gas system? No, this handguard is sized for carbine-length AR-15 builds.

Does it come with rail covers? The handguard provides four rail sections; rail covers are sold separately.

Will this get too hot to hold? The integral aluminum heat shield insert is built in specifically to protect your hand from barrel heat.

Buy the ProMag Quad Rail Handguard, 2-Piece Polymer, for AR-15 Carbine

Accessorize your carbine with a ProMag Quad Rail Handguard from our AR handguards selection. Order online and we’ll ship it straight to your door from our Lubbock, Texas gun shop.