Smallest .45 ACP handguns, by published overall length

Ranked on overall length, the same basis as the 9 mm list and for the same reason: it is the one size dimension every manufacturer here publishes comparably. This is the widest span of frame types the directory holds in a single chambering — a subcompact, a full-size, a long-slide competition model and a 1911-pattern pistol all sit in the same ranking, so read the frame class beside each row rather than the position alone.

Ranked records08

#	Record	Figure
1	Glock G30 Gen 5	177 mm / 6.97 in10-round standard magazine
2	Glock G36	177 mm / 6.97 in6-round standard magazine
3	Heckler & Koch USP45 Compact (V1)	180 mm / 7.09 in8-round standard magazine
4	Heckler & Koch USP45 (V1)	201 mm / 7.91 in12-round standard magazine
5	Heckler & Koch HK45 (V1)	204 mm / 8.03 in10-round standard magazine
6	Glock G21 Gen 5 MOS	205 mm / 8.07 in13-round standard magazine
7	Colt Government Model, SKU O1911C-SS	≈215.9 mm / 8.5 in7-round standard magazine
8	Glock G41 Gen 4	223 mm / 8.78 in13-round standard magazine

How this ranking is built: Height is excluded because makers measure it differently, as on the 9 mm lists. Weight is excluded from this ranking, but note it divides more cleanly here than in 9 mm: every .45 ACP record in the directory publishes either a without-magazine or a with-empty-magazine figure, and none publishes the unqualified single weight that forces the 9 mm list into a third group. Only source-verified records appear, every figure is the manufacturer's published one shown in both unit systems, and values marked ≈ were converted by this directory from the system the source published.

Reference information only. Not legal, purchasing, training, carry, storage, or assembly advice. A ranking on one published field is not a judgement about fit, suitability, or quality. Manufacturer technical data are rounded and may change without notice.