$60.99
15 in stock
Online inventory may differ from in-store availability.
Quick turnaround so you get your gear sooner.
Trusted checkout with industry-standard protection.
Keeping Traditions Alive Since 1953
Secure Transactions provided with 
Finishing a stripped AR-15 lower means chasing down a pile of tiny parts, and forgetting even one detent spring can stall an entire build. The Luth-AR LRPK-1 solves that by packing everything you need into a single kit, so you can sit down at the bench and take a bare receiver all the way to a functioning lower ready for your buffer tube, buffer system, and stock of choice.
What sets this kit apart is what it doesn't use. There's no MIM in here. Luth-AR machines and investment casts its parts to Mil-Spec drawings, materials, and heat treat, which matters most on the hammer and trigger where cheaper metal-injection-molded parts can crack at high round counts. The springs use a mix of 17-4 stainless and Mil-Spec steel wire, so the fire control group holds up over the long haul. Reviewers building on it note a consistent pull weight right around six pounds, which is exactly what you'd want from a standard mil-spec group.
This is a complete lower parts kit, not a stripped-down builder version. You get the trigger, hammer, disconnector, and all the springs and pins for the fire control group, plus the safety selector and detent, magazine catch with aluminum button, bolt catch with roll pin and plunger, trigger guard, front pivot pin, rear takedown pin and detents, and the buffer retainer with spring. Luth-AR also throws in a black A2 pistol grip along with the grip screw and lock washer.
The A2 grip gets you shooting right away, and it's an easy swap later if you decide you want an aftermarket grip down the road. If you're planning to drop in a match or two-stage trigger, plenty of builders still grab the complete kit and simply set aside the fire control parts, since you're still getting all the detents, springs, and retention hardware that are so easy to lose or misplace. It's an American-made, budget-friendly foundation for a first build or a solid restock for the parts bin.
Yes. This is the complete version of the kit, so it comes with a full mil-spec single-stage fire control group and a black A2 pistol grip along with the grip screw and lock washer. That makes it a true drop-and-go kit for finishing a stripped lower rather than a bare-bones builder kit.
It's built to Mil-Spec dimensions, so it fits standard AR-15 lowers chambered in .223 Rem and 5.56 NATO. As with any parts kit, tolerances on some aftermarket or unique receivers can vary slightly, but the LRPK-1 is designed around the same blueprints as a standard forged lower.
Luth-AR does not use MIM (metal injection molded) parts in this kit. The components are investment cast or machined to Mil-Spec drawings and heat treated, and the springs use a blend of 17-4 stainless and Mil-Spec steel wire. That's a real advantage on parts like the hammer, where lower-grade MIM can fail under heavy use.
Absolutely. Many builders buy the complete LRPK-1 just for all the detents, springs, pins, and retention hardware that are easy to lose, then set aside the standard trigger and hammer to drop in their own trigger group. It's a handy way to make sure your build isn't held up over one small missing spring.
| UPC | 859992007647 |
|---|---|
| Manufacturer | |
| Manufacturer Part Number | LRPK-1 |
| Caliber/Gauge | .223 REM/5.56 NATO |
You must be logged in to post a review.
Reviews
There are no reviews yet.