GunsAmerica

Quick Look

The Thompson .45, famously known as the "Tommy Gun," was developed in the early 20th century by Auto-Ordnance. Originally designed as a trench-clearing weapon for World War I, it gained notoriety in both military and civilian markets. Today, it remains a collectible firearm with historical appeal and remains in demand among enthusiasts and reenactors.

Why It's a Top Choice

Classic .45 ACP stopping power with controllable recoil
Iconic design with deep historical significance
Solid steel construction ensures longevity and reliability
Available in semi-auto variants for civilian ownership
Excellent conversation piece for collectors and history buffs

Key Variants

Thompson 1921

The original model featuring high rate of fire and classic Cutts compensator.

Thompson 1927A1

Semi-auto civilian version, popular among collectors and enthusiasts.

Thompson M1A1

World War II variant simplified for mass production and rugged battlefield use.

Thompson Deluxe Semi Auto

Modern production with updated parts for civilian range or recreational use.

Thompson Commando

Dark Parkerized finish and tactical look for collectors preferring a battle-worn aesthetic.

Competitor Comparison Table

Feature	Thompson .45	HK UMP45	KRISS Vector .45
MSRP	$1,300+	$1,500+	$1,700+
Capacity	20-100 rounds (drum/stick)	25 rounds	13/25 rounds
Weight	≈11 lb loaded	≈6 lb	≈7 lb
Optics-Ready	No	Yes	Yes
Trigger Type	Single-stage	Single-stage	Two-stage
Notable Pro	Unmatched visual appeal and history	Modern lightweight frame	Recoil mitigation system
Notable Con	Heavy and bulky by modern standards	Limited aftermarket parts	Higher price point

Best Use Cases

Historical reenactments and living history
Firearms collection centerpiece
Recreational range shooting
WWII or gangster-era movie props

FAQs

What is the difference between the M1A1 and 1927A1 Thompson models?

The M1A1 is a wartime version designed for simplified military use, while the 1927A1 is a civilian semi-auto replica.

Can I legally own a Thompson .45 today?

Yes, semi-auto variants are legal federally. Full-auto models require NFA registration where permitted by state law.

How does the Thompson .45 compare to modern submachine guns?

It is heavier and less modular but offers iconic design and historical attraction unmatched by newer platforms.

THOMPSON 45 for Sale