Custom AR-10 Dust Covers — .308 / 7.62 Ejection Port Covers
Personalize your big-bore rifle with custom AR-10 dust covers from My Southern Tactical — ejection port covers sized specifically for large-frame .308 Winchester, 7.62x51mm NATO, and 6.5 Creedmoor upper receivers. These aren’t AR-15 parts: the larger AR-10 port and longer .308-class casings demand a properly dimensioned cover, and that’s exactly what these are built to be.
It’s worth knowing that AR-10 build dimensions vary significantly from one pattern to the next — unlike the highly standardized AR-15, the AR-10 world includes DPMS LR-308, SR-25, and ArmaLite patterns that don’t all interchange. That makes a correctly spec’d ejection port cover essential, so check your receiver pattern against the compatibility matrix below before ordering.
Where we stand apart is the artwork. We apply vibrant, full-color, high-definition direct prints — flags, camo patterns, custom text, or your own image through Design Your Own — directly onto the cover. These are true direct prints, not flat monochrome laser engraving, for detailed multi-color designs built to last. Shop our custom .308 / AR-10 ejection port covers below and finish your big-bore build with a look that’s all yours.
AR-15 vs. AR-10 Dust Cover Differences
- Larger overall dimensions — AR-10 ejection port covers are longer and taller than AR-15 covers to clear the bigger .308 / 7.62x51mm case and the larger ejection port.
- Different port footprint — the .308-class upper has a wider, longer ejection port, so an AR-15 cover physically won’t span or seal it correctly.
- Pin and spring clearance — the hinge pin location and spring channel are positioned for the larger receiver, so AR-15 hardware spacing doesn’t line up.
- Not interchangeable — an AR-15 dust cover will not fit an AR-10, and an AR-10 cover will not fit an AR-15; they are platform-specific parts.
- Pattern variation within AR-10 — even among AR-10s, DPMS, SR-25, and ArmaLite patterns differ, so the correct cover depends on your specific receiver pattern.
- Same custom-print advantage — like all our covers, AR-10 plates get full-color HD direct printing, not flat single-color engraving.
AR-10 Dust Cover Compatibility Matrix
| Receiver Pattern |
Fits Our AR-10 Dust Cover? |
Notes |
| DPMS LR-308 / SR-25 High Profile Uppers |
Yes |
Fits the DPMS high-profile .308 pattern. |
| DPMS LR-308 Low Profile Uppers |
Yes |
Fits the most common modern .308 pattern, shared by most aftermarket uppers. |
| ArmaLite AR-10 Pattern Uppers |
No |
ArmaLite uses a proprietary pattern that differs from DPMS and is not compatible. |
| Aftermarket (Aero Precision M5, etc.) |
Yes |
The Aero M5 follows the DPMS pattern, the de facto .308 standard. |
Frequently Asked Questions
Will an AR-15 dust cover fit an AR-10 receiver?
No. AR-10 / .308 receivers use a larger, longer ejection port, so AR-10 covers are bigger and the pin/spring spacing differs. An AR-15 cover won’t fit or seal an AR-10 port — you need a dedicated AR-10 dust cover.
Will your AR-10 dust covers fit an Aero Precision M5 upper?
Yes. The Aero Precision M5 uses the DPMS low-profile .308 pattern, which our AR-10 dust covers are designed to fit. The M5 is the most common .308 build block, so it’s a primary compatibility target.
What is the difference between DPMS and ArmaLite pattern dust covers?
They’re different AR-10 standards. DPMS LR-308 (and SR-25) pattern uppers are the modern norm and share common port dimensions, while ArmaLite AR-10 uppers use a proprietary layout. A DPMS-pattern cover generally won’t fit an ArmaLite upper, so match your receiver pattern.
Are these dust covers engraved or full-color printed?
Full-color printed. We use a high-definition direct-print process — not laser engraving — for vibrant, detailed, multi-color designs. The printed finish is durable and built to resist normal range use, handling, and common gun cleaners.
Does the AR-10 dust cover include the pin and spring?
Yes — each AR-10 dust cover includes the installation pin and spring needed to mount it on a compatible .308 upper receiver.
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