Springfield Armory Hellcat 3" Micro-Compact vs Smith & Wesson M&P 9 Shield Plus

Both are 9x19mm Parabellum micro-compact records in this directory. The M&P 9 Shield Plus is ≈2.6 mm / ≈0.1 in longer overall; its barrel is ≈2.8 mm / ≈0.1 in longer; the M&P 9 Shield Plus lists 2 rounds more of standard capacity. 2 fields are not comparable — overall height, weight — because the makers publish them on different measurement bases.

Computed differences

Field	Difference
Overall length	≈2.6 mm / ≈0.1 in (M&P 9 Shield Plus is greater)
Overall width	Not published by both
Overall height	Not comparable — Hellcat 3" Micro-Compact: with flush magazine; 4.5 in with the extended magazine; M&P 9 Shield Plus: no basis stated
Barrel length	≈2.8 mm / ≈0.1 in (M&P 9 Shield Plus is greater)
Weight	Not comparable — Hellcat 3" Micro-Compact publishes with empty magazine; M&P 9 Shield Plus publishes unloaded
Standard capacity	2 rounds (M&P 9 Shield Plus 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.

Published fields, side by side

Field	Hellcat 3" Micro-Compact	M&P 9 Shield Plus
Manufacturer	Springfield Armory	Smith & Wesson
Manufacturer size label	Micro-Compact	Micro-Compact
Directory frame class	micro-compact	micro-compact
Chambering	9x19mm Parabellum	9x19mm Parabellum
Overall dimensions	≈length 152.4, height 101.6 mm / length 6, height 4 in (height: with flush magazine; 4.5 in with the extended magazine; width not published)	length 155, height 117 mm / length 6.1, height 4.6 in (width not published)
Barrel length	≈76.2 mm / 3 in	79 mm / 3.1 in
Weight	≈519 g / 18.3 oz (with flush magazine, which Springfield does not state is empty; 18.6 oz with the extended magazine)	507.5 g / 17.9 oz (Smith & Wesson states no magazine basis; it publishes magazine weights separately, as 2.6 oz for the 13-round and 2.2 oz for the 10-round)
Standard capacity	11 rounds	13 rounds
Verification	Source verified 2026-08-12	Source verified 2026-08-13

Full records, with every value beside the source it came from: Springfield Armory Hellcat 3" Micro-Compact · Smith & Wesson M&P 9 Shield Plus. More from these makers: Springfield Armory · Smith & Wesson.

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 source-backed correction.