Luth-AR A1 Triangular Carbine - Drop In Handguard

The Luth-AR A1 Triangular Handguard brings the correct two-piece profile to XM177 and early M16A1 retro carbine builds, delivering the classic triangular drop-in form in Dupont Zytel glass-filled nylon with aluminum heat shields — giving period-correct AR builders the authentic profile of the original carbine-length handguard in a modern reproduction.

The Luth-AR A1 Triangular Carbine Handguard is a two-piece drop-in AR-15 handguard designed for carbine-length gas systems with a front sight gas block, providing the correct triangular profile for XM177 and M16A1 retro builds.

Built from Dupont Zytel 30% glass-filled nylon — the same polymer family used in the original military handguard production — the A1 handguard delivers the correct ergonomics and profile for retro builds without requiring sourcing of worn surplus parts. Aluminum heat shields are fitted to each half to protect the shooter's hand from barrel heat transfer during sustained fire, maintaining one of the key functional features of the original design. The drop-in fit over a carbine-length gas system with a front sight gas block is correct for XM177 and M16A1 pattern carbines. At 6-5/8 inches in length, the dimensions match the carbine-length handguard specification. Comes in Black.

Platform: AR-15. Type: Two-piece drop-in. Gas system: Carbine, front sight gas block required. Length: 6-5/8 inches. Material: Dupont Zytel 30% glass-filled nylon. Color: Black. Aluminum heat shields included in each half.

Constructed from Dupont Zytel 30% glass-filled nylon for period-correct material composition and durability, with aluminum heat shields in both halves for heat protection during firing.

The correct handguard for XM177 retro carbine builds, M16A1 pattern reproductions, and any period-correct AR-15 carbine build that requires the authentic triangular two-piece handguard profile over a carbine-length gas system.

Luth-AR manufactures AR-15 stocks, handguards, and components for the civilian market, with a focus on quality reproductions and functional accessories for all AR-15 configurations.