YHM vs BCM: AR-15 brands compared
BCM leads in 5 of 6 categories.
YHM for muzzle devices. BCM for upper receivers, handguards and lower receivers.
From tens of thousands of real builds and live prices at 30+ retailers.
Our take
Yankee Hill Machine (YHM) makes suppressors, handguards, muzzle devices and gas blocks at fair prices, from a family shop in western Massachusetts.
Suppressors · Limited lifetime warranty · Family owned · Handguards
- Close to average prices
- Muzzle devices, picked 1.8x as often
BCM makes mil-spec AR uppers, barrels and bolt carriers, and it test fires every complete upper and bolt carrier group before it ships.
Mil-spec parts · Test fired uppers · Chrome lined barrels · Veteran founded
- Paying more: about 24% above average
- The more popular pick: in 37% of builds
- Upper receivers, picked 5x as often
- Handguards, picked 6x as often
Many builders mix them: 45% of YHM builds add BCM, most often the bolt carrier group.
Biggest differences
"Picked" is the share of builds with that part that chose each brand.
| YHM | BCM | Difference | |
|---|---|---|---|
| Price vs average | About average | 24% pricier | YHM cheaper |
| Share of builds | 5% | 37% | BCM 7x |
| Handguards picked | 2.0% | 13% | BCM 6x |
| Uppers picked | 5.1% | 24% | BCM 5x |
| Parts listed | 250 | 776 | BCM 3x |
| Gas blocks picked | 2.7% | 6.7% | BCM 2.5x |
| Muzzle devices picked | 5.5% | 3.1% | YHM 1.8x |
Price: YHM wins
For the same part, YHM parts run about average and BCM parts run 24% pricier than average.
Builder favorite: BCM wins
YHM is in 5% of builds and BCM is in 37% of builds.
Receivers: BCM wins
Builders pick BCM lower receivers (6x) and upper receivers (5x) more often than YHM.
Why BCM: BCM M4 uppers are machined from 7075-T6 forgings with a Type III hard coat anodized finish.
Internals: BCM wins
Builders pick YHM muzzle devices (1.8x) more often than BCM. Builders pick BCM gas blocks (2.5x) more often than YHM. BCM barrels, bolt carrier groups and charging handles are picked often, YHM's rarely.
Why BCM: The BCM bolt is Carpenter 158 steel, shot peened, high pressure tested and magnetic particle inspected.
Furniture: BCM wins
Builders pick BCM handguards (6x) more often than YHM. BCM stocks and pistol grips are picked often, YHM's rarely.
Shopper clicks: BCM wins
Of recent clicks through to a store for these brands, 87% went to BCM and 13% went to YHM.
The full record
Everything we track for YHM vs BCM, from builds, store listings and daily prices.
| YHM | BCM | |
|---|---|---|
| Share of builds | 5% | 37% |
| Price tier | Mid priced | Premium |
| Parts listed | 250 | 776 |
| Part types | 18 | 34 |
| Retailers carrying | 16 | 17 |
| In stock now | 83% | 82% |
| Price change, 90 dayson the most picked parts | Flat | Flat |
| On sale now | None | None |
