Are you in the market for a great lower-parts kit AR15? Whether you are looking to upgrade your existing rifle or build one from scratch, having the right components is invaluable. To make sure you have everything necessary for success, it’s important to choose a quality lower-parts kit and research all of the available options. In this post, we will break down what makes up an excellent lower-parts kit AR15, provide our top-rated overall picks and discuss building an AR15 from scratch with the appropriate components. Get ready to take your firearm’s performance to the next level!
Table of Contents
- Best Lower Parts Kit AR15 Review
- #1 Geissele Standard Lower Parts Kit
- #2 CMMG AR-15 Lower Receiver Parts Kit
- #3 CMMG Lower Parts AR15 Gun Builder’s Kit
- #4 CMMG AR-15 Lower Receiver Pins and Springs Parts Kit
- #5 Smith & Wesson M&P AR-15 Lower Parts Kit
- #6 Aero Precision AR15 Lower Parts Kit
- #7 Aero Precision AR15 Standard Lower Parts Kit
- #8 Aero Precision AR-15 Magpul MOE Lower Parts Kit
- #9 Bravo Company Gunfighter AR-15 Enhanced Lower Parts Kit
- #10 Jacob Grey Firearms AR-15 Lower Parts Kits
- #11 RISE Armament Lower Parts Kit
- #12 WMD Guns AR-15/.308 Lower Parts Kit
- #13 XTS AR-15 Lower Small Parts Kit AR-KIT
- #14 TRYBE Defense AR-15 Mil-Spec Complete Lower Parts Kit
- #15 Strike Industries AR Enhanced Lower Receiver Parts
- #16 KAK AR-15 Lower Parts Kit
- #17 Tactical Superiority AR-15 Lower Parts Kit
- #18 Zro Delta – Ar-15 Lower Parts Kit
- #19 Alg Defense – Ar-15 Lower Parts Kit W/ Qms Trigger
- #20 Sharps Bros – Ar-15 Lower Parts Kit With No Fire Control
Best Lower Parts Kit AR15 Review
#1 Geissele Standard Lower Parts Kit
For those who are serious about their AR15s, the Geissele Standard Lower Parts Kit No Grip is a must-have for any firearm enthusiast. This Mil-Spec kit from Geissele contains 18 essential components necessary to complete or rebuild your lower receiver—everything you need minus the grip. Among the included parts is their Posi-Lock safety system, which provides positive tactile feedback when shifting between safe and fire positions so that you can confidently trust what mode your gun is currently in. Thanks to this durable design, this Geissele 05-343 Standard Lower Parts Kit will help ensure your lower receiver performs at its highest potential. Don’t settle for anything less than excellence; get top-quality results with the trusted Geissele Standard Lower Parts Kit without a grip package today.
#2 CMMG AR-15 Lower Receiver Parts Kit
Assembling an AR-15 lower receiver doesn’t have to be complicated. With the CMMG AR-15 Lower Receiver Parts Kit, you can easily and efficiently complete the part of your gun build. This kit contains all the parts necessary to make a fully functioning lower receiver for your build. Parts are broken up into colour-coded bags, so finding and organizing components is a breeze. From springs and pins to other required parts – this kit has them all! Don’t waste time sourcing each part individually; order the CMMG AR-15 Lower Receiver Parts Kit today and get your build done right, fast.
#3 CMMG Lower Parts AR15 Gun Builder’s Kit
The CMMG Lower Parts AR15 Gun Builder’s Kit is perfect for those looking to build their own AR15-style firearm. This kit includes most of the components you need, including bolt catch, pivot pin detent, selector, and more. With everything you need in a single package, the Lower Parts Kit is an economical way to get all the small parts you need without having to buy them individually. And with a manufacturer model of 55CA601, you can rest assured that these are true mil-spec parts, so your completed AR won’t just look good – it’ll function safely and reliably. Don’t waste time gathering all the little parts by yourself; grab this kit and make your build dream a reality!
#4 CMMG AR-15 Lower Receiver Pins and Springs Parts Kit
Are you looking for the best-guaranteed way to keep your AR-15 rifle in top-quality condition? The CMMG® AR-15 Lower Receiver Pins and Springs Parts Kit will ensure that your AR-15 rifle consistently operates at peak performance levels, with all parts meeting or exceeding mil-spec standards. Replacing standard parts often found on AR-15 rifles with this kit, you can be sure of a seamless installation and reliability when it comes to performance. The model number is 55AFF75, so next time you head out to the shooting range make sure your weapon is as good as new by replacing those necessary standard parts with this kit from CMMG®.
#5 Smith & Wesson M&P AR-15 Lower Parts Kit
If you need mil-spec parts to build and customize lower receivers, then look no further than the Smith & Wesson M&P AR-15 Lower Parts Kit. This updated kit includes all of the essential parts, including bolt catches, buffers, disconnectors, hammers and pins, magazine catches, pistol grips and screws, selector detents and springs, take-down pins and springs, trigger guards roll pins and triggers. High-quality craftsmanship goes into every part to ensure your accuracy while the building is precise and consistent. Made in the USA with superior materials such as steel alloys and heat-treated metals you can rest assured that your M&P AR-15 will last for years. For enhanced customization options, this parts kit is just what you need to ensure your receivers are exactly how you want them. With the Smith & Wesson M&P AR-15 Lower Parts Kit, you get a dependable solution for gun builds while ensuring ultimate performance.
#6 Aero Precision AR15 Lower Parts Kit
Are you ready to build the premium AR of your dreams? The Aero Precision AR15 Lower Parts Kit is exactly what you need. This kit includes 17 gun parts that will help you finish your custom AR15 build and provide you with optimal quality. Plus, these parts are Mil-Spec dimensions and coatings, making them engineered and designed to maximum excellence. Your dream gun needs the best parts! Get the Aero Precision AR 15 Lower Parts kit today and make sure you have everything you need for a top-notch custom rifle. With components like a bolt catch, safety selector, takedown pin and magazine catch included in this kit, a high-quality weapon can easily become your reality. Come build a durable masterpiece of firepower that stands out from the rest with an Aero Precision AR15 Lower Parts Kit!
#7 Aero Precision AR15 Standard Lower Parts Kit
The Aero Precision AR15 Standard Lower Parts Kit is the perfect choice when it comes to putting together the lower of your custom AR15 build. Our parts are all manufactured to mil-spec dimensions and coated for quality assurance, so you can be confident that you’re getting the best possible interface between components. Plus, with our Enhanced Lower Parts Kit offering an upgraded Magpul MOE Grip and Aero Precision Billet Trigger Guard, you have everything you need for your build. This kit includes a takedown/pivot spring, detent, trigger/hammer pin, takedown pin, pivot pin, bolt catch, spring and buffer; a safety selector, spring and detent; a buffer retainer and spring; a billet trigger guard and roll pin; an ergonomic Magpul MOE pistol grip; screw and lock washer; a trigger spring as well as hammer spring and disconnector spring; plus a magazine catch body – complete with spring and button – along with a hammer, trigger, disconnector components. Get your Aero Precision AR15 Standard Lower Parts Kit today – quality parts manufactured to exacting standards – so you can start building your dream AR15 build right away!
#8 Aero Precision AR-15 Magpul MOE Lower Parts Kit
Upgrade your AR-15 with the Aero Precision AR-15 Magpul MOE Lower Parts Kit and enjoy precision, reliability and versatility. This lower parts kit is designed to fit an Aero Precision Gen 2 or similar mil-spec lower receiver. It includes all the necessary components for assembly – such as a Magpul MOE Grip in Black or FDE – as well as a Magpul MOE Trigger Guard in either colour option. With the Aero Precision AR-15 Magpul MOE Lower Parts Kit, you get a reliable and trusted build that offers accuracy, precision and versatility no matter what your mission calls for. Take control of your build and customize it to meet all your needs whether you opt for the tried and true fire control group or go with one of our upgraded trigger kits. Get the best parts available with this combination of MIL-SPEC grade components and high-quality accessories from Magpul. Make sure your next build is one you can trust; get started with the Aero Precision AR-15 Magpul MOE Lower Parts Kit today!
#9 Bravo Company Gunfighter AR-15 Enhanced Lower Parts Kit
Replace or upgrade your AR-15 lower receiver with the Bravo Company Gunfighter AR-15 Enhanced Lower Parts Kit. This complete kit includes top-of-the-line Mil-Spec parts that have been engineered and built to offer unparalleled performance. The BCM PNT Trigger Assembly provides a smoother trigger pull while significantly reducing felt “creep.” The included BCM Pistol Grip, Mod 3, offers an aggressive texture to secure and enhance your grip while shooting. In addition to those components, this kit also includes a BCM Enhanced Trigger Guard and various other parts renowned for their durability under use. All of these parts are guaranteed to meet Mil-Spec standards so you can trust them for any situation you encounter. Get ready for the ultimate shooting experience – purchase the Bravo Company Gunfighter AR-15 Enhanced Lower Parts Kit today!
#10 Jacob Grey Firearms AR-15 Lower Parts Kits
Jacob Grey Firearms bring you their premier lower receiver parts kit for the AR-15. Compatible with your favourite grip, stock, and buffer tube kit, this assortment of finely crafted components is an ideal addition to your next AR-15 build. Made to rigorous standards of quality and accessibility, each piece meets or exceeds Mil-Spec tolerances and offers a degree of precision that enthusiasts from all levels can trust. Designed with customization in mind, assembling your own AR-15 gives you unparalleled control over this multi-functional platform. You can build it exactly how you want for use in hunting, target shooting, law enforcement operations, or even self-defence. With Jacob Grey Firearms’s complete lower receiver parts kit as part of your build process, you gain access to dependable components that facilitate a safer assembly experience. Enjoy the pleasure of complete control accompanied by assured safety when building an AR-15 with Jacob Grey Firearms’s trusted metalwork.
#11 RISE Armament Lower Parts Kit
Time to take your AR-15 to the next level with the RISE Armament Lower Parts Kit. Whether you need to replace a few pieces or rebuild the whole receiver, this kit is designed for maximum efficiency. It’s easy to install and comes with 20 parts specifically designed for AR-15-style rifles. Each piece undergoes rigorous testing and refinement, ensuring that it can handle even the toughest conditions. The kit doesn’t include a trigger but does contain all of the necessary pins, safety components and more for reliable, seamless performance. A profession grade product from RISE Armament, you don’t have to worry about sacrificing quality for convenience when upgrading your firearm. Get on target faster than ever before with the ultimate laser-like precision of the RISE Armament Lower Parts Kit.
#12 WMD Guns AR-15/.308 Lower Parts Kit
The WMD Guns AR-15/.308 Lower Parts Kit Mod 2 is the perfect solution for boosting the performance of your AR Rifle. This kit includes a NiB-X hammer, trigger, disconnect, bolt catch, mag catch, mag catch button, and safety selector paired with a front pivot pin, rear takedown pin, trigger guard assembly and essential pins and detents. As part of the Mod 2 iteration, this product also features nickel/black colouration in its NiB-X finish – perfect for delivering reliability against even the toughest of tasks. For those looking to upgrade their rifle with something, they can count on again and again – look no further than WMD Guns’ AR-15/.308 Lower Parts Kit Mod 2.
#13 XTS AR-15 Lower Small Parts Kit AR-KIT
The XTS AR-15 Lower Small Parts Kit is the perfect addition to your rifle. This kit from XTS is made of efficient and heavy-duty materials, making it exactly what you need for superior performance. Whether you’re a beginner shooter or simply looking to upgrade an existing rifle, this small parts kit from XTS is one of the best options on the market. It contains everything required for modifying your firearm, so you won’t have to shop around for separate pieces elsewhere. Carefully designed with precision by top-class professionals, the parts in the XTS AR-15 Lower Small Parts Kit are guaranteed to provide optimal performance and durability on any rifle. With these expertly engineered elements working together as part of your system, you can hit targets with superior accuracy and confidence. Get all the reliable components necessary to host your own shooting competition at home with one simple purchase – get the XTS AR-15 Lower Small Parts Kit today!
#14 TRYBE Defense AR-15 Mil-Spec Complete Lower Parts Kit
The TRYBE Defense AR-15 Mil-Spec Complete Lower Parts Kit is everything you need to complete your AR lower receiver build. This kit includes top-of-the-line products crafted with supreme precision and quality assured by mil-spec standards. The Bolt Carrier Group, Grip & Handstop, Charging Handle, and Muzzle Break feature sleek designs and robust performance so your completed rifle will look great and keep shooting in any conditions. Upgrade your optics with TRYBE Optics for optimal long-range targeting, accuracy, and visibility. With the included 42” Rifle Case, you can easily transport your completed rifle to and from the range or outdoors without ever sacrificing protection from shocks or scrapes. In addition, carry all of your shooting necessities in the extra-large TRYBE Tactical Range Bag that features a multitude of pockets that can be organized to fit anything from ammunition to snacks. Make sure you have all the essentials for thorough firearm maintenance when you get home as well as exotic wood oil stocks, lubricants for all applications, cleaning kits and much more! With every offer provided by TRYBE Defense, there is no reason not to make them part of your arsenal today!
#15 Strike Industries AR Enhanced Lower Receiver Parts
Take your AR15 to the next level with the Strike Industries AR Enhanced Lower Parts Package w/Trigger, Hammer & Disconnector. This bundle of AR15 lower parts from Strike Industries is designed to upgrade the function and quality of your weapon for a smooth shooting experience. The set includes a fire control group with a crisp 4.5-5.5 lbs pull for easier operation as well as critical components coated in a phosphate finish for superior corrosion and wear resistance. The included enhanced bolt catch is completely redesigned with improved grip surfaces and angles to enhance performance when out in the field or on the range. For reliable parts that you can trust, rely on Strike Industries and their collection of enhanced lower parts packages perfect for any AR enthusiast searching for superior performance, exceptional function life, and lasting reliability no matter where you take your rifle.
#16 KAK AR-15 Lower Parts Kit
Introducing the KAK AR-15 Lower Parts Kit, designed for serious rifle shooters and tactical professionals. This kit is made up of 100% USA parts, offering ultimate quality and performance. Each part is carefully developed to deliver precision accuracy and smooth operation every time you fire your weapon. The trigger group is mil-spec grade to provide reliable performance even under the most extreme conditions. Included in the kit is a black oxide finish on all springs for increased durability, providing extra protection against wear and tear. The standard A2 handle ensures comfortable to use throughout your shooting training or competition. The KAK Billet Trigger Guard gives extra sustainment with improved ergonomics from its design which includes finger grooves and ridges. A common problem among other AR parts kits has been solved thanks to the rounded curves in the guard’s edges, which reduces snagging when reloading quicker than ever before. Get the best upgrade available with KAK’s proven record of success in developing top-notch components you can trust when it matters most!
#17 Tactical Superiority AR-15 Lower Parts Kit
The Tactical Superiority AR-15 Lower Parts Kit is an essential tool for any serious shooter. Featuring mil-spec components with superior reliability, accuracy, and durability, this kit provides excellent performance and a competitive edge to your build. With everything you need to complete a lower receiver, this kit contains a brand new bolt catch, magazine catch, pivot pin and spring, safety selector, bolt catch spring, magazine catch button, and even a magazine catch spring. From fast reloads to enhanced accuracy on the range or in the field, these parts provide superior craftsmanship that sets your rifle apart from the rest. Upgrade your build today with Tactical Superiority’s AR-15 Lower Parts Kit and experience reliable performance that lasts!
#18 Zro Delta – Ar-15 Lower Parts Kit
The Zro Delta Enhanced Ar-15 Lower Parts Kit provides superior performance and durability for all your AR-15 gunsmithing needs. Easily assemble the framework of your lower with an awesome phosphate coating to keep it functioning better than ever and protected against corrosion. This kit contains everything you need to build and maintain your AR-15 minus the Trigger Guard, Grip, and Fire Control Assemblies. Not only do you receive grade-A parts in every kit, but they are also preassembled making installation quick and easy! Our unique design features provide unrivalled reliability that is perfect for any competition or recreational shooter. With our Enhanced LPK, you can create or customize a smooth working accurate assault rifle without breaking the bank. Now you can enjoy shooting with confidence knowing the parts inside your AR-15 were designed for superior performance with elite standards of quality at an affordable price. Get your Zro Delta Ar-15LPK today and start enjoying more time on the range!
#19 Alg Defense – Ar-15 Lower Parts Kit W/ Qms Trigger
The Alg Defense AR-15 Lower Parts Kit W/ QMS Trigger is an easy and cost-effective way to get all the components you need for your tactical rifle. This complete lower parts kit comes with everything you need to build out a lower receiver, including a Bolt Catch, Mag Release, Safety Detent, Takedown Pins, Buffer Retainer, Trigger Guard Roll Pin and more! Crafted from high-grade materials for optimal longevity and reliability–a must-have for any gun enthusiast or collector. And now it includes the QMS Trigger – providing a smooth 4.5 lb pull weight without sacrificing crisp trigger feel and performance. With the option of adding a grip, this kit is perfect for use in competitions or just out on the range practising accuracy drills. Get your AR-15 Lower Parts Kit today to enhance your firearm with premium American-made quality parts that’ll last through any mission you take on – no matter how demanding!
#20 Sharps Bros – Ar-15 Lower Parts Kit With No Fire Control
Do you want a reliable and high-quality AR-15 lower parts kit that gives you complete control over your rifle build? Look no further than the Sharps Bros. AR-15 Lower Parts Kit, allowing you to choose all of the components that fit your needs, truly making it uniquely yours. This set contains 100% USA-made components, manufactured to our exacting standards. By cutting out the fire control group and overseas production, you can be assured each part meets the highest level of quality at an excellent price. Use this kit for various parts such as bolt catch, selector detent, magazine catch assembly pins, takedown pin, pivot pin detents, buffer retainers and a full spring kit. Make sure each piece fits your mil-spec dimension lower receiver with complete confidence in the end result. Get ready to customize your perfect rifle with Sharps Bros today!
When it comes to choosing the best lower-parts kit for your AR-15 rifle, there are a lot of things to consider. In this comprehensive buyer’s guide, we’ve outlined what you need to look for and some of the best options on the market. We hope that after reading this article, you feel confident in making a purchase for the lower parts kit that is perfect for your needs.
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