Manufacturer load identifiers
| Identifier | Bullet |
|---|---|
| 5.56K | 62gr LAP |
| 5.56K-BP | 62gr LAP |
PMC lists these identifiers on its X-TAC product pages. This is not a live inventory table. Confirm each retailer's package count; retailer case labels may differ from manufacturer load identifiers.
About PMC X-TAC M855
PMC identifies 5.56K as a 62gr light armor piercing (LAP) load. PMC publishes 2,920 fps for a 16-inch test barrel and 3,100 fps for a 20-inch test barrel. These are manufacturer test figures, not guaranteed results in every rifle. Follow the firearm manufacturer's chambering and ammunition guidance. A .223/5.56 search grouping does not establish compatibility.
M855 and M193 design differences
PMC's M193-style 5.56X uses a 55gr FMJ-BT bullet; its M855-style 5.56K uses a 62gr LAP bullet. Bullet weight or a twist-rate label alone does not establish comparative accuracy in a particular rifle. Check the range's ammunition restrictions before using either load; do not infer permission from an indoor or outdoor setting.
How It Compares
Compare current listing prices for the same manufacturer load and quantity. A shared M855-style label does not prove identical construction or firearm performance across manufacturers. Neither the label nor a larger package establishes a price ranking.
Comparing listings
Calculate each listing's ammunition cost per round from its actual price and round count. Include known shipping costs and applicable taxes before comparing delivered totals. Unknown shipping prevents a delivered-cost ranking. Verify stock, destination restrictions, and shipping terms with the retailer. Price alerts report observed changes without identifying a purchase time or predicting resale value.
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- 5.56 ammo types — M193 vs M855 vs soft point — M855 green tip vs other 5.56 loads
- 5.56 home defense loads compared — how M855 compares with other loads for home defense