Description
Building out an AR-15 lower is one of the most satisfying projects in the hobby, and the parts you drop in set the tone for how the whole rifle feels. This Timber Creek Outdoors AR Lower Parts Kit gives you the essential controls and hardware to finish a lower receiver, with the added bonus of a tungsten gray finish that ties a custom build together. Every colored component is CNC-machined from aircraft-grade billet aluminum, which means tight tolerances and a look that stands apart from the plain black kits everybody else is running.
What Sets the Timber Creek Tungsten Kit Apart
The headliner here is the Timber Creek ambidextrous safety selector. If you shoot left-handed, run a support-side thumb, or just like having identical controls on both sides when you're working around cover, an ambi safety earns its keep fast. The kit also brings a magazine release button, a mil-spec bolt catch, and the AR takedown and pivot pins, all finished to match. Round that out with the springs and detents needed to complete the job, and you've got a cohesive set instead of a bag of mismatched parts.
Fit and Finish on the ARLPKT
The tungsten anodizing does more than look good. It adds corrosion resistance and holds up to regular handling, so those controls keep their color after plenty of range trips. Because these parts are cut to spec, they drop into any standard mil-spec lower without fuss. Keep in mind this is set up as a builder's kit focused on the controls and hardware, so plan your fire control group and grip around it if your build calls for specific pieces there.
A Smart Starting Point for Your Build
Whether you're assembling a fresh lower or refreshing a tired one, this kit is a solid foundation. Grab your punch set and a bench block, take your time seating the detents and springs, and always run a function check once everything's together. Do it right and you'll have controls that feel crisp and a lower that looks every bit as good as it runs.
Key Specifications
- Manufacturer: Timber Creek Outdoors
- Model: AR
- Manufacturer Part Number: ARLPKT
- UPC: 816397027236
- Platform: AR-15 / MSR
- Material: Aircraft-grade billet aluminum
- Finish: Tungsten Gray Anodized
- Handedness: Ambidextrous safety selector
- Construction: CNC-machined
- Bolt Catch: Mil-spec
- Kit Type: Builder's lower parts kit
What’s Included
- Timber Creek ambidextrous safety selector
- Magazine release button
- Mil-spec bolt catch
- AR takedown and pivot pins
- Springs, detents, and mounting hardware to complete the build
Frequently Asked Questions
Is the Timber Creek AR Lower Parts Kit a complete lower parts kit?
This is set up as a builder's kit, so it focuses on the controls and hardware like the ambi safety, mag release, bolt catch, takedown pins, springs, and detents. Depending on your build, you may want to source your fire control group and grip separately. Always check the exact contents against your parts list before you start.
Will this kit fit any AR-15 lower receiver?
The parts are CNC-machined to mil-spec dimensions, so they drop into standard AR-15 and MSR lowers without modification. If your receiver has proprietary geometry or an integrated trigger guard, compare those details against the kit first. For the vast majority of standard lowers, it's a straightforward fit.
What's the benefit of the ambidextrous safety selector?
An ambi safety puts a selector lever on both sides of the receiver, which is a big help for left-handed shooters or anyone who runs a support-side thumb. It also gives you the same controls no matter how you shoulder or transition the rifle. Righties benefit too when moving around cover and obstacles.
Does the tungsten finish hold up over time?
The tungsten gray anodizing adds corrosion resistance and keeps its color through regular handling and range use. It's more than a looks upgrade, though it certainly gives a build a clean, distinctive appearance. Just wipe the parts down like you would any other component during cleaning.




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