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Building or refreshing an AR-15 lower comes down to the small stuff, and this DoubleStar kit covers all of it in one box. The heart of the kit is a fire control group made from mil-spec heat-treated 8620 steel, finished on all the touch points so you get a smooth, crisp break with minimal creep or drag right out of the bag. It's the kind of trigger feel you notice the first time you dry fire, and the steel is built to hold up over the long haul rather than wear out early like the cheaper metal injection molded parts you'll find in bargain kits.
One detail worth calling out is the coiled steel spring pins DoubleStar uses in place of the usual split roll pins. They start easier during install and flex outward once seated, which means less chance of a pin walking loose on you down the road. It's a small upgrade that saves headaches, especially if you've fought with stubborn roll pins before. DoubleStar also tosses in an extra takedown detent and spring, and anyone who has watched one of those tiny parts launch across the garage will appreciate the backup.
This is a complete kit, not just a bag of pins and springs. Along with the full fire control group you get the bolt catch and magazine catch assemblies, front pivot pin, rear takedown pin with springs and detents, trigger guard pin, buffer detent and spring, plus an A2 pistol grip with its screw and washer. That means you can take a stripped 5.56 or .223 lower and get it running without hunting down odds and ends separately.
DoubleStar leans on quality American-made components throughout, and it shows in the fit and finish. Whether you're assembling a first-time build or freshening up a well-used rifle, this kit gives you dependable parts that install cleanly and perform where it counts.
It comes with the complete fire control group plus all the pins and springs, the bolt catch and magazine catch assemblies, front pivot pin, rear takedown pin with two springs and two detents, trigger guard pin, buffer detent and spring, and an A2 pistol grip with its screw and washer. That covers everything needed to finish a stripped lower receiver. DoubleStar also includes an extra takedown detent and spring as a spare.
Yes, it's built to mil-spec dimensions and works with standard AR-15 lower receivers chambered in 223 Rem or 5.56 NATO. If your lower already has an integrated trigger guard, you simply won't use the included trigger guard pin. Otherwise the parts drop right in where they belong.
A basic install calls for a hammer and a set of punches (3/32" and 5/32") for the pins, a screwdriver or Allen key for the pistol grip screw, and a small blade or knife to depress the detent when setting the front pivot pin. A little lubricant and some masking tape to protect the receiver finish help too. The coiled steel spring pins DoubleStar uses tend to start easier than standard split roll pins, so the job goes smoother.
The fire control group is machined from mil-spec heat-treated 8620 steel and finished on all the contact points, which gives you a smooth, crisp pull with minimal creep or drag. It's a standard-weight mil-spec trigger rather than a match trigger, but it feels notably cleaner than the gritty triggers found in budget kits. The quality steel is also built to hold that feel over years of use.
| UPC | 841348103417 |
|---|---|
| Manufacturer | |
| Manufacturer Part Number | AR270 |
| Product Type | Lower Parts Kit |
| Model | |
| Color | Black |
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