Most Popular AR-15 Bolt Carrier Groups, October 2026
The bolt carrier groups builders picked most for their AR-15 builds so far in October 2026. Bravo Company M16 Bolt Carrier Group Black led the slot with 20.4% of all bolt carrier group picks. Hundreds of different bolt carrier groups were picked, so this ranks what people chose, not what we stock.
From the GunPartPicker build log · recomputed every 6 hours ·
What builders picked so far in October 2026
| # | bolt carrier group | Share |
|---|---|---|
| 1 | Bravo CompanyBravo Company M16 Bolt Carrier Group Black | 20.4% |
| 2 | 9.0% | |
| 3 | Palmetto State ArmoryPSA AR-15 Bolt Carrier Group 5.56 Full-Auto Nitride MPI - 516446953 | 8.4% |
| 4 | 6.9% | |
| 5 | 3.1% | |
| 5 | Sons of Liberty Gun WorksSons of Liberty Gun Works AR-15 5.56 Bolt Carrier Group 158 Carpenter Sp/HPT/MPI | 3.1% |
| 7 | Lewis Machine & ToolLMT Defense 5.56 F-A BOLT CARRIER GROUP | 1.9% |
| 7 | 1.9% | |
| 9 | 1.7% | |
| 9 | 1.7% |
Share is of every bolt carrier group pick that month. Paid is the median price shown at the moment builders selected the part, not today's price.
What moved since September 2026
Picks in this slot ran down 61% on September 2026, with this month still running.
- PSA AR-15 Bolt Carrier Group 5.56 Full-Auto Nitride MPI - 516446953+3.2 pts8.4% of picks, #4 to #3
- KAK Industry Bolt Carrier Group For AR-15 8620 Steel Construction Chrome Lined Phosphate Finish Black C158 Bolt+3.0 pts3.1% of picks, #67 to #5
- LMT Defense 5.56 F-A BOLT CARRIER GROUP+1.9 pts1.9% of picks, new to the slot
- Wilson Combat M16 Bolt Carrier Assy 5.56 NATO Polished Black Nitride-4.1 pts9.0% of picks, holding #2
- Wilson Combat .308 Win Bolt Carrier Assembly, Nickel Boron - TR-BCA-NB-308-1.1 pts1.9% of picks, #5 to #7
- Cryptic Coatings 5.56 NATO AR-15 Bolt Carrier Group - Mystic Bronze-0.9 pts6.9% of picks, #3 to #4
What builders pay for a bolt carrier group
Median $199, with half of all picks between $149 and $218. These are the prices shown at the moment each part went into a build in October 2026, so they reflect what people actually chose to spend rather than what the catalog averages.
- Budget end
- $149
- 25th percentile
- Median
- $199
- typical pick
- Upper end
- $218
- 75th percentile
How we know
GunPartPicker records the part, the slot and the price every time someone adds a component to a build. This page ranks those picks in the bolt carrier group slot so far in October 2026. Nothing here is editorial and nothing can be paid for: a part ranks because people chose it.
Common questions
What is the most popular AR-15 bolt carrier group?
Bravo Company M16 Bolt Carrier Group Black was picked most in October 2026, taking 20.4% of all bolt carrier group picks on GunPartPicker that month. It ranked 1st in September 2026.
How much do builders spend on an AR-15 bolt carrier group?
The median price at the moment of selection was $199 in October 2026. Half of all picks fell between $149 and $218.
How concentrated is this slot?
Hundreds of different bolt carrier groups were picked in October 2026, and the top 10 took 58.1% of all picks between them. The bolt carrier group is the moving heart of the rifle, and the slot where builders consolidate hardest on a few names.
Where does this data come from?
Every pick counted here is a part someone added to a build on GunPartPicker. It is not a sales ranking, an editor's list or a sponsored placement, and nothing on this page can be bought into. The numbers are recomputed from the build log every six hours.