Description
If you're chasing that early Vietnam-era M16A1 look for your AR-15 build, the Luth-AR FK-A1RG takes the guesswork out of sourcing parts one at a time. This is a complete set that bundles the three pieces of A1 furniture you need in a matching OD Green finish, so everything shows up in the same shade and profile instead of a mismatched grab bag of used parts. It's built for retro builders, restorers, and anyone who just likes the slim, old-school lines of the original A1 rifles.
What Comes in the Luth-AR A1 Kit
The kit includes the A1 buttstock, a rifle-length A1 triangle handguard, and the A1 pistol grip, plus the grip screw and washer to bolt it down. The stock is molded from modern glass-filled nylon, which is what makes it strong enough to hold up without the old foam core that original A1 stocks relied on. It's a clean, correct-looking reproduction that captures the shorter length-of-pull and rounded profile the A1 is known for.
Handguard Built to Take the Heat
The handguard halves are made from DuPont Zytel 30 percent glass-filled nylon, one of the tougher polymers used in AR furniture. Each half is lined with aluminum heat shields, so extended range sessions won't cook your support hand or warp the handguard against a hot barrel. The rifle-length triangle shape is the real deal for a full-size A1 or retro upper, giving you that unmistakable teardrop silhouette.
Installation is straightforward for anyone who's done basic AR work. The handguard drops in with a standard handguard removal tool, and the grip mounts with the included hardware. Builders who've run these note the fit and finish come out clean, with tight seams and good alignment once everything is seated. If you want a faithful A1 build without hunting down surplus parts, this kit gets you most of the way there in one box.
Key Specifications
- Manufacturer: Luth-AR
- Manufacturer Part Number: FKA1RG
- UPC: 812058033240
- Color: O.D. Green
- Style: Complete Furniture Kit
- Platform: AR-15
- Handguard Length: Rifle Length
- Handguard Material: DuPont Zytel 30% Glass-Filled Nylon
- Stock Material: Glass-Filled Nylon
- Heat Shields: Aluminum, lined in each handguard half
- Profile: A1 / M16A1 Retro Style
What’s Included
- A1 Buttstock
- A1 Rifle-Length Triangle Handguard (two halves with aluminum heat shields)
- A1 Pistol Grip
- Pistol Grip Screw
- Pistol Grip Washer
Frequently Asked Questions
What length handguard comes with the Luth-AR FK-A1RG kit?
This kit includes the rifle-length A1 triangle handguard, which is the correct size for a full-length A1 or retro-style upper with a rifle-length gas system. If you're running a carbine setup, you'd want the shorter XM177-style version instead. Match the handguard length to your gas system and front sight base placement.
What is the A1 furniture made from?
The handguard is molded from DuPont Zytel 30 percent glass-filled nylon, and the buttstock uses a modern glass-filled nylon that stays strong without the old foam core. Each handguard half is lined with aluminum heat shields to keep barrel heat off your support hand. It's a durable setup that holds up to regular range use.
Does the FK-A1RG kit include everything needed to install it?
The kit comes with the buttstock, handguard, and pistol grip, plus the grip screw and washer for mounting the grip. You'll need a standard handguard removal tool to seat the handguard, but no extra hardware beyond that for the grip. The stock installs on a standard A1-style rifle buffer tube.
Will this A1 kit fit a standard AR-15 build?
Yes, it's designed for the AR-15 platform and reproduces the classic A1 dimensions. The buttstock mounts on a fixed rifle-length receiver extension, so it's meant for a rifle-style lower rather than a collapsible carbine setup. It's a popular choice for retro and restoration builds going for that authentic M16A1 look.



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