Gun Tools/Compatibility/Updated October 3, 2026
SIG P385 vs P320 Size Comparison
The P320 FULL is 0.08 in (2 mm) longer, 0.14 in (4 mm) lower and 0.08 in (2 mm) wider than the P385 FULL. With an empty magazine it weighs 0.1 oz (3 g) less. Both drawn to scale from the published dimensions, P385 FULL against P320 FULL.
SIG P385 vs P320 side by side
Pistol A
Pistol B
Side profile
Width and weight
- Overall width
- 1.32 in1.4 in
- P320 FULL is 0.08 in wider
- Weight, empty magazine
- 29.6 oz29.5 oz
- P320 FULL is 0.1 oz lighter
- Barrel
- 4.7 in4.7 in
- Same
Tap the drawing to flip between the P385 FULL, the P320 FULL and both.
Photos: SIG Sauer product photos from KYGUNCO's P385, P365 and P320 listings. Cut out and sized to each pistol's published length and height by GunPartPicker. The P385 FULL is the CARRY photo with the slide lengthened.
Quick answer
The P320 FULL is 0.08 in (2 mm) longer, 0.14 in (4 mm) lower and 0.08 in (2 mm) wider than the P385 FULL. With an empty magazine it weighs 0.1 oz (3 g) less.
- P385 FULL: 7.92 in long, 5.64 in tall, 1.32 in wide, 4.7 in barrel. P320 FULL: 8 in long, 5.5 in tall, 1.4 in wide, 4.7 in barrel.
One square is one inch. Published dimensions, checked October 3, 2026.
Is the P320 FULL bigger than the P385 FULL?
The P320 FULL. It's 0.08 in (2 mm) longer, 0.14 in (4 mm) lower and 0.08 in (2 mm) wider than the P385 FULL, by the makers' published dimensions.
SIG P385 vs P320 dimensions
| Dimension | P385 FULL | P320 FULL | B vs A |
|---|---|---|---|
| Overall length | 7.92 in201 mm | 8 in203 mm | +0.08 in2 mm |
| Barrel length | 4.7 in119 mm | 4.7 in119 mm | Same |
| Height with magazine | 5.64 in143 mm | 5.5 in140 mm | −0.14 in4 mm |
| Overall width | 1.32 in34 mm | 1.4 in36 mm | +0.08 in2 mm |
| Weight, empty magazine | 29.6 oz839 g | 29.5 oz836 g | −0.1 oz3 g |
| Magazines | P320, 17 / 21 rd | P320, 17 / 21 rd | Same |
| Optic mounting | SIG-LOC PRO, RMR and DPP direct | P320 optic plate system | Different |
Height is with the flush magazine. The P385 with a 21 round magazine stands about 0.7 in taller.
Will a P320 FULL holster fit the P385 FULL?
No. SIG says the P385 is not compatible with P320 or P365 holsters, and a P320 FULL holster is cut for a different slide and frame. Buy a holster made for the P385 FULL.
Do the P385 FULL and P320 FULL share magazines?
Yes. Both take P320 magazines.
Which P385 models has SIG measured?
Three of the five, drawn here at one scale. Tap one to put it on side A.
SIG P385 CARRY
7.22 x 5.64 x 1.32 in, 4 in barrel
SIG P385 COMP
7.9 x 5.64 x 1.32 in, 4 in barrel
SIG P385 FULL
7.92 x 5.64 x 1.32 in, 4.7 in barrel
SIG P385 COMPACT
4 in barrel on the short 15 round grip. SIG lists it as coming soon with no dimensions.
SIG P385 MACH3D
4 in barrel with the MACH3D compensator, due at the end of 2026. No dimensions yet.
Where can I buy a SIG P385?
No store had one in stock when we checked on October 3, 2026. These stores list it, all at SIG's street price.
| Store | What they list | Price | Status |
|---|---|---|---|
| Sportsman's Outdoor Superstore | CARRY, CARRY with safety, COMP | $599.99 and $749.99 | Preorder |
| Primary Arms | CARRY and COMP in black or coyote, safety models, ROMEO-X bundles | $599.99 to $1,249.99 | Coming soon, email alert |
| KYGUNCO | CARRY and COMP, 10 round and MA compliant models, SIG-LOC bundles | $599.99 to $1,249.99 | Get notified |
| BattleHawk Armory | COMP with safety, 10 round | $749.99 | Out of stock |
Prices, models and what fits: SIG P385 release date, price and where to buy.
More P385 comparisons
Frequently Asked Questions
Is the P385 FULL bigger than the P320 FULL?
The P320 FULL. It's 0.08 in (2 mm) longer, 0.14 in (4 mm) lower and 0.08 in (2 mm) wider than the P385 FULL, by the makers' published dimensions.
Which is lighter, the P385 FULL or the P320 FULL?
The P320 FULL, at 29.5 oz with an empty magazine against 29.6 oz for the P385 FULL.
Do the P385 FULL and P320 FULL take the same magazines?
Yes. Both take P320 magazines.
Will a P320 FULL holster fit the P385 FULL?
No. SIG says the P385 is not compatible with P320 or P365 holsters, and a P320 FULL holster is cut for a different slide and frame. Buy a holster made for the P385 FULL.
Where do these numbers come from?
From sigsauer.com, checked October 3, 2026. Both guns are drawn at one scale from product photos sized to those numbers.
Cite this tool: GunPartPicker, “SIG P385 vs P320 Size Comparison”, https://gunpartpicker.net/tools/sig-p385-size-comparison/p385-full-vs-p320-full. SIG dimensions from sigsauer.com and Glock dimensions from glock.com, checked October 3, 2026. Free to cite with attribution.
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