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The Luth-AR XM-177 A1 Triangular Handguard is a faithful nod to the retro carbine era, giving your AR-15 the unmistakable triangular profile that classic clone builders chase. Molded from Dupont Zytel 30 percent glass-filled nylon, it holds up well to heat and recoil while staying light in the hand. Each half is lined with aluminum heat shields, so barrel heat stays where it belongs instead of soaking through to your grip during longer strings of fire. At 6 5/8 inches, it's sized specifically for carbine-length gas systems paired with a front sight gas block, matching the dimensions of the handguard found on the original XM177 carbine.
This is a two-piece drop-in design built for carbine-length gas systems running a fixed front sight base. The two halves snap around the gas tube and seat into the delta ring and handguard cap without any need to modify your barrel nut or delta ring. If you're putting together a period-correct retro build or just love the look of the old triangular guards, this is the shape you're after. It comes in the classic black finish and carries the Luth-AR name, which has a solid reputation among builders working on both retro and modern platforms.
Worth knowing before you order: to run the triangular profile properly you'll want the matching triangular handguard end cap, which is sold separately and comes in .625 inch and .750 inch sizes depending on your barrel diameter. Pencil-profile barrels run the .625 cap while most standard barrels use the .750. If your rifle already has an A1 or A2 front sight base pinned in place, installing that cap means driving out the taper pins, so plan accordingly. Made in the USA and backed by the Luth-AR warranty, this handguard is a straightforward way to give a modern AR-15 that unmistakable vintage carbine character.
It's built for AR-15 carbine-length gas systems running a fixed front sight gas block. The 6 5/8 inch length and triangular shape match the original XM177 carbine profile. It won't fit mid-length or rifle-length setups, so make sure your build uses a carbine gas system.
Yes, the triangular profile requires the matching triangular handguard end cap, which is sold separately. It comes in .625 inch and .750 inch versions depending on your barrel diameter. Pencil barrels typically use the .625 cap while most standard barrels use the .750.
Each half is lined with aluminum heat shields that reflect barrel heat away from the polymer and your support hand. Combined with the glass-filled nylon shell, it stays comfortable to hold even after some rounds downrange.
The two-piece design drops in around the gas tube and seats into your delta ring and cap without modifying the barrel nut or delta ring itself. If your rifle already has a pinned front sight base and you need to fit the triangular end cap, you'll have to drive out the taper pins, so a front sight bench block and punches help.
| UPC | 812058031956 |
|---|---|
| Manufacturer | |
| Manufacturer Part Number | XM177 |
| Color | Black |
| Length | 6.625'' |
| Product Type | Factory |
| Style | Carbine |
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