Real build data, Q3 2026
Jul 1 to Sep 30, 2026Every ranking on this page comes from parts real builders added to their builds on GunPartPicker, Jul 1 to Sep 30, 2026. A pick counts each time a builder adds the part to a build in our builder, filed under the part's own category. Prices and stock are checked daily across every store we track. No surveys, no search trends, no sponsored picks.
Quick picks
Live prices- 1
Most addedSmith & Wesson M&P15 Complete Lower 5.56x45mm/.223 Remington, Black - 812002Picked by hundreds of builders in Q3 2026/6 stores/In stock - 2
Best budgetPSA AR-15 Complete Lower Magpul MOE EPT Edition - Flat Dark Earth, No MagazinePicked by hundreds of builders in Q3 2026/1 store/In stock - 3
Best mid tierSharps Bros Showdown Stripped Lower Receiver - Black, Unique Design and High-Performance for Custom AR Builds - SBLR11Picked by hundreds of builders in Q3 2026/4 stores/In stock - 4
Best premiumLMT MARS-LS PDW Complete Ambidextrous AR-15 Lower ReceiverPicked by hundreds of builders in Q3 2026/3 stores/In stock
How we pick: ranked by how often builders added each part to a real build on GunPartPicker in Q3 2026, in stock parts first, then by tier. Prices and stock are checked daily across every store we track.
The Short Answer
We ranked every lower receiver that builders added to a build on GunPartPicker from July 1 to September 27, 2026. Here's what they picked, and what each pick costs today.
- Most picked overall: Smith & Wesson M&P15 complete lower. It took 8.2% of all lower receiver picks, from 860 different builders. It was $269.99 when most of them picked it. It's $339.20 today and in stock at 4 stores.
- Most picked stripped lower you can buy: Sharps Bros Showdown. 471 builders picked it, and it's $284.95 at 3 stores.
- Best budget (complete, under $200): PSA MOE EPT complete lower, FDE. It's the most picked complete lower under $200, chosen by 299 builders, at $129.99.
- Best premium ($350 and up): LMT MARS-LS PDW complete lower. It's the most picked lower over $350 of any type, chosen by 244 builders, at $989.99.
Picked by hundreds of builders in Q3 2026/In stock
Picked by hundreds of builders in Q3 2026/In stock
Picked by hundreds of builders in Q3 2026/In stock
Picked by hundreds of builders in Q3 2026/In stock
How We Pick
Every pick on this page is the lower the most builders chose in its type and price band, among lowers you can actually buy today. We don't pick from reviews, sponsorships or what forums like.
We count different builders, not clicks, so one person adding the same lower ten times counts once. One builder added the PSA Stealth stripped lower 63 times, and another added the LMT MARS-L 52 times. We counted each of them once. Prices in the charts are what the lower cost when the builder picked it. Prices on the product cards are live.
The lower is where a lot of builds start. About 22% of the builders who picked a lower this quarter didn't add any other part, so read these numbers as what people start with, not only what they finish.
Most Picked Lower Receivers
Share of all lower receiver picks on GunPartPicker, Jul 1 to Sep 27, 2026
| Item | Share (%) |
|---|---|
| S&W M&P15 complete lower | 8.2% |
| Wilson Combat forged stripped | 7% |
| Aero M4E1 complete lower | 4.7% |
| Aero M4E1 stripped, Freedom | 4.6% |
| Sharps Bros Showdown stripped | 4.5% |
| PSA MOE EPT complete, FDE | 2.8% |
| LMT MARS-LS PDW complete | 2.3% |
What Changed Since March
When we first published this guide in March 2026, a PSA complete lower led with 13.2% of picks and Aero's M4E1 stripped lower was second at 10.6%. Aero held about a third of all lower picks.
Since July, the S&W M&P15 complete lower leads at 8.2%. Aero's share has fallen to 19.6%, and PSA is right behind it at 19.0%. S&W is third at 9.7% and Wilson Combat fourth at 8.5%. Aero didn't lose the builders. Its M4E1 lowers are still third and fourth by product, but you can't buy one right now.
Most Picked Lower Receiver Brands
Share of all lower receiver picks by brand, Jul 1 to Sep 27, 2026
| Item | Share (%) |
|---|---|
| Aero Precision | 19.6% |
| Palmetto State Armory | 19% |
| Smith & Wesson | 9.7% |
| Wilson Combat | 8.5% |
| Lewis Machine & Tool | 5.8% |
| Sharps Bros | 5.7% |
| Spike's Tactical | 4.3% |
| Bravo Company (BCM) | 2.9% |
| Griffin Armament | 2.7% |
| Radian Weapons | 2% |
Stripped or Complete?
Lower Receiver Picks by Type
Type from the product listing, Jul 1 to Sep 27, 2026
| Item | Share (%) |
|---|---|
| Stripped AR-15 | 56.3% |
| Complete AR-15 | 36.2% |
| AR-10 | 3.8% |
| 9mm | 2.2% |
| Parts kits and other | 1.6% |
Among AR-15 lowers, 61% of picks were stripped and 39% were complete. That split has barely moved since March, when it was 62% stripped.
A stripped lower is the bare serialized receiver. You pick your own trigger, grip, stock, buffer and lower parts kit. A complete lower ships with all of that installed and is ready to pin onto an upper. If you want to choose your own trigger, go stripped. If you want the rifle running this weekend, go complete.
AR-10 lowers made up 3.8% of all lower picks and 9mm lowers 2.2%. We cover them further down.
What Builders Spend
Stripped Lower Picks by Price Paid
Price when the builder picked it, Jul 1 to Sep 27, 2026
| Item | Share (%) |
|---|---|
| $175 to $399 | 37.5% |
| $100 to $174 | 35.8% |
| Under $100 | 17.1% |
| $400 and up | 9.6% |
Stripped lowers split into two big groups. 36% of stripped picks cost $100 to $174, where the forged Aero and S&W lowers sit. Another 38% cost $175 to $399, where the billet and ambidextrous lowers start. Only 17% went under $100.
Complete Lower Picks by Price Paid
Price when the builder picked it, Jul 1 to Sep 27, 2026
| Item | Share (%) |
|---|---|
| $200 to $349 | 55.9% |
| $350 and up | 23.2% |
| Under $200 | 21% |
Complete lowers cluster tighter. 56% of complete picks cost $200 to $349, 21% went under $200 and 23% cost $350 or more.
We left out a few listings whose recorded price was clearly wrong, like a complete lower logged at $12.91.
The Picks, by Budget
Stripped, Under $100
The pick: PSA Blem Stealth stripped lower, $69.99. It's the most picked stripped lower under $100, chosen by 206 builders. Blem means a cosmetic mark on the finish. It doesn't change how the receiver fits or runs. The next budget stripped lowers you can buy, the regular PSA Stealth and the Diamondback DB15, had 42 and 38 builders.
Picked by hundreds of builders in Q3 2026/In stock
Stripped, $100 to $174
The pick: S&W M&P15 stripped lower, $132.27. Two Aero M4E1 lowers were picked more in this band, and both are out of stock. The S&W is the most picked one you can buy today, chosen by 162 builders and in stock at 5 stores.
Picked by hundreds of builders in Q3 2026/In stock
Stripped, $175 to $399
The pick: Sharps Bros Showdown, $284.95. It's a billet lower, and 471 builders picked it. No stripped lower you can buy today was picked more at any price.
If you want ambidextrous controls, builders went to the LMT MARS-L (238 builders, $342) and the Griffin Armament MK2 Ambi (210 builders, $209). The Spike's Tactical listing with 188 builders is a stripped upper and lower set at $234.
Picked by hundreds of builders in Q3 2026/In stock
Picked by hundreds of builders in Q3 2026/In stock
Picked by hundreds of builders in Q3 2026/In stock
Picked by hundreds of builders in Q3 2026/In stock
Stripped, $400 and Up
The pick: Radian A-DAC 15 stripped lower, gray, $514.95. It's fully ambidextrous, and 135 builders picked the gray one. The blemished Knight's Armament SR-15 lower was next, with 45 builders at $650.
Picked by hundreds of builders in Q3 2026/In stock
Complete, Under $200
The pick: PSA MOE EPT complete lower, FDE, $129.99. 299 builders picked it, more than twice the next complete lower under $200. You get Magpul furniture and PSA's polished EPT trigger. The black PSA Stealth MOE version (140 builders, $119.99) and the Classic EPT A2 (70 builders, $189.99) came next.
Picked by hundreds of builders in Q3 2026/In stock
Picked by hundreds of builders in Q3 2026/In stock
Complete, $200 to $349
The pick: S&W M&P15 complete lower, $339.20. No lower of any type was picked by more builders. The Aero M4E1 complete lower was second in this band with 500 builders, and it's out of stock. Spike's M4 complete lower (43 builders, $293.22) is the next one in stock.
Picked by hundreds of builders in Q3 2026/In stock
Complete, $350 and Up
The pick: LMT MARS-LS PDW complete lower, $989.99. It's the most expensive pick on this page, and 244 builders still chose it. You're paying for a fully ambidextrous lower with LMT's PDW stock already fitted. The BCM complete lower with FDE furniture was next, with 88 builders at $525.
Picked by hundreds of builders in Q3 2026/In stock
If You're Building an AR-10 or a 9mm
AR-10 lowers took 3.8% of lower picks. The most picked was PSA's Gen3 PA-10 complete lower with the Classic EPT trigger, with 59 builders at $189.99. AR-10 lowers don't fit AR-15 uppers, so match the lower to your upper before you add it.
9mm lowers took 2.2%. The most picked, the Foxtrot Mike FM9 complete lower (61 builders), is out of stock. The most picked one you can buy is Spike's Spider 9mm stripped lower, with 23 builders at $161.10. It takes Colt pattern magazines.
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Filed underAR-15/Lower Receivers/Buyer's Guide/Explainer
FAQ
Frequently asked questions
What is the most popular AR-15 lower receiver?
- The Smith & Wesson M&P15 complete lower. It took 8.2% of all lower receiver picks on GunPartPicker from July 1 to September 27, 2026, from 860 different builders.
What is the most popular stripped lower?
- The Wilson Combat forged lower (730 builders) and the Aero Precision M4E1 Freedom edition (493 builders) were picked most from July 1 to September 27, 2026, but neither was in stock in late September 2026. The most picked stripped lower you can buy is the Sharps Bros Showdown, chosen by 471 builders, at $284.95.
Should I buy a stripped or complete lower?
- Among AR-15 lowers picked from July 1 to September 27, 2026, 61% were stripped and 39% were complete. Go stripped if you want to choose your own trigger, grip and stock. Go complete if you want a lower that's ready to pin onto an upper.
What is the best budget AR-15 lower?
- The PSA MOE EPT complete lower in FDE is the most picked complete lower under $200, chosen by 299 builders from July 1 to September 27, 2026, at $129.99 in late September 2026. For a stripped lower under $100, builders picked the PSA Blem Stealth most, at $69.99.
Why isn't the Aero M4E1 one of your picks?
- Builders still pick it. The M4E1 complete and stripped lowers were third and fourth from July 1 to September 27, 2026. None of the Aero lowers builders picked was in stock at any store we track in late September 2026, and we only pick parts you can buy.
Do I need an FFL to buy a lower receiver?
- Yes. The lower receiver is the serialized part of an AR-15 and is legally the firearm. It ships to a licensed dealer, where you complete the transfer paperwork and a background check.
How does GunPartPicker count lower receiver picks?
- We count the different builders who added each lower receiver to a build on GunPartPicker, so one person adding the same part many times counts once. Build data is stored against an account, an anonymous session or a hashed IP so each builder counts once, and guides report totals only.
Written by
GPP Editorial TeamAR Build Specialists
GunPartPicker guides are powered by data from real builds. What builders actually select tells the story.
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Tools for this guide
- Planning toolAR Build Cost CalculatorHow much does it cost to build an AR-15? Pick caliber, barrel length, stock or brace and optic, then drag both edges of the price band from the cheap end to the top end. Every slot fills with the part builders add most that is in stock, priced live. The headline total is the core rifle, optics and extras are priced separately, and beside them sits what builders really pay per slot, measured from real part picks. Roll a random build, or open yours in the builder in one click. Computed from over 1 million AR parts selected on GunPartPicker since 2020.
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