B5 Systems vs LMT: AR-15 brands compared
B5 Systems leads in 3 of 5 categories.
B5 Systems for stocks. LMT for receivers and internals.
From tens of thousands of real builds and live prices at 30+ retailers.
Our take
B5 Systems makes AR stocks, grips and handguards, mainly the SOPMOD and Bravo stocks the US military buys, plus the Type 22 P-Grip.
Mil-spec buffer tube fit · SOPMOD stocks · Limited lifetime warranty
- Close to average prices
- The more popular pick: in 14% of builds
- Stocks, picked 58x as often
LMT, now LMT Defense, makes rifles for militaries around the world. On the parts side it's known for the MRP monolithic upper and the Enhanced Bolt.
Monolithic uppers · Military contractor · Berry compliant
- Close to average prices
- Receivers (B5 Systems receivers are rarely picked)
- Internals (B5 Systems internals are rarely picked)
Many builders mix them: 33% of LMT builds add B5 Systems, most often the stock.
Biggest differences
"Picked" is the share of builds with that part that chose each brand.
| B5 Systems | LMT | Difference | |
|---|---|---|---|
| Price vs average | 11% cheaper | 12% pricier | B5 Systems cheaper |
| Share of builds | 14% | 4% | B5 Systems 4x |
| Stocks picked | 11% | 0.2% | B5 Systems 57x |
| Retailers carrying | 15 | 10 | B5 Systems 1.5x |
| Parts listed | 205 | 154 | B5 Systems 1.3x |
Price: B5 Systems wins
For the same part, B5 Systems parts run 11% cheaper than average and LMT parts run 12% pricier than average.
Builder favorite: B5 Systems wins
B5 Systems is in 14% of builds and LMT is in 4% of builds.
Receivers: LMT wins
LMT lower receivers picked often, B5 Systems rarely.
Why LMT: The MRP upper is machined from a single 7075-T6 forging with the rail built in, and it's set up for quick barrel swaps.
Most picked B5 Systems receivers
Rarely picked
Internals: LMT wins
LMT bolt carrier groups picked often, B5 Systems rarely.
Why LMT: The Enhanced Bolt uses a proprietary material that's stronger than a standard bolt and easier to clean.
Most picked B5 Systems internals
Rarely picked
Furniture: B5 Systems wins
Builders pick B5 Systems stocks (58x) more often than LMT. B5 Systems pistol grips are picked often, LMT's rarely.
Why B5 Systems: The B5 Bravo stock fits mil-spec carbine tubes and uses steel hardware and steel anti-rotation QD sling mounts.
The full record
Everything we track for B5 Systems vs LMT, from builds, store listings and daily prices.
| B5 Systems | LMT | |
|---|---|---|
| Share of builds | 14% | 4% |
| Price tier | Mid priced | Mid priced |
| Parts listed | 205 | 154 |
| Part types | 7 | 21 |
| Retailers carrying | 15 | 10 |
| In stock now | 81% | 70% |
| Price change, 90 dayson the most picked parts | Flat | Flat |
| On sale now | None | None |
