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Directory / Compare / P320 Full-Size vs PDP Standard Full Size 4.5"
Side-by-side · Manufacturer-published fields only

SIG SAUER P320 Full-Size vs Walther PDP Standard Full Size 4.5"

Both are 9x19mm Parabellum full-size records in this directory. The PDP Standard Full Size 4.5" is ≈0.2 mm longer overall; the P320 Full-Size has the longer barrel by ≈5.08 mm / ≈0.2 in; the PDP Standard Full Size 4.5" lists 1 round more of standard capacity. 2 fields are not comparable — overall height, weight — because the makers publish them on different measurement bases.

Computed differences06
FieldDifference
Overall length≈0.2 mm (PDP Standard Full Size 4.5" is greater)Note: the published inch figures are identical, so this difference does not resolve in that unit.
Overall width≈3.6 mm / ≈0.15 in (PDP Standard Full Size 4.5" is greater)
Overall heightNot comparable — P320 Full-Size: magazine state not stated by SIG SAUER; PDP Standard Full Size 4.5": magazine state not stated by Walther
Barrel length≈5.08 mm / ≈0.2 in (P320 Full-Size is greater)
WeightNot comparable — P320 Full-Size publishes with empty magazine; PDP Standard Full Size 4.5" publishes unloaded
Standard capacity1 round (PDP Standard Full Size 4.5" is greater)
How these differences are computed: each is the arithmetic difference between the two published figures, and it is only shown where both sources measured the field the same way. Where a source states a measurement basis the other does not match, the row says so instead of subtracting — figures on different bases are not comparable even when the numbers sit side by side. Differences marked ≈ involve at least one figure this directory converted between unit systems, so the difference is no more precise than that conversion.
Size, to scale
To-scale size envelopes: P320 Full-Size vs PDP Standard Full Size 4.5"Boxes drawn from published overall dimensions at one scale, aligned at the rear. SIG SAUER P320 Full-Size: 203 mm long, 32 mm wide; Walther PDP Standard Full Size 4.5": 203.2 mm long, 35.6 mm wide.050 mm100 mm150 mm200 mmLengthPDP Standard Full Size 4.5" is 0.2 mm longerTop · length × width
  • SIG SAUER P320 Full-SizeLength 203 mm / 8 inWidth 32 mm / 1.25 in
  • Walther PDP Standard Full Size 4.5"Length ≈203.2 mm / 8 inWidth ≈35.6 mm / 1.4 in
Boxes, not silhouettes: makers publish a pistol's overall envelope, not its shape, so that is all this draws. Every box is aligned at the rear and drawn at one fixed scale, the same on every page of this site, so drawings compare across pages. It is not life-size on your screen. Heights are not drawn because the heights are not published on one stated basis (P320 Full-Size: magazine state not stated by SIG SAUER; PDP Standard Full Size 4.5": magazine state not stated by Walther).
Published fields, side by side
FieldP320 Full-SizePDP Standard Full Size 4.5"
ManufacturerSIG SAUERWalther
Manufacturer size labelFull-SizeFull Size
Directory frame classFull-sizeFull-size
Chambering9x19mm Parabellum9x19mm Parabellum
Overall dimensions203 × 32 × 140 mm / 8 × 1.25 × 5.5 in (height: magazine state not stated by SIG SAUER)≈203.2 × 35.6 × 137.2 mm / 8 × 1.4 × 5.4 in (height: magazine state not stated by Walther)
Barrel length119.38 mm / 4.7 in≈114.3 mm / 4.5 in
Weight802.3 g / 28.3 oz (SIG states "w/ Magazine" and does not say the magazine is empty)≈680 g / 24 oz (magazine state not stated by Walther)
Standard capacity17 rounds18 rounds
VerificationSource verified 2026-08-12Source verified 2026-09-30
Full records, with every value beside the source it came from: SIG SAUER P320 Full-Size · Walther PDP Standard Full Size 4.5". More from these makers: SIG SAUER · Walther.
Reference information only. Not legal, purchasing, training, carry, storage, or assembly advice. Manufacturer technical data are rounded and may change without notice. Spotted an error? Submit a correction.