SHOT Show 2018: Windham Weaponry .450 Thumper Pistol

by
posted on January 31, 2018
** When you buy products through the links on our site, we may earn a commission that supports NRA's mission to protect, preserve and defend the Second Amendment. **
winham_lede_450-pistol_white_01s.jpg

Have you been feeling a little blue because you haven't been able to find a semi-automatic handgun chambered for straight-walled, big-bore cartridges like the .450 Bushmaster? Well, cheer up friend! Windham Weaponry has just what you're looking for.

The new .450 Thumper pistol (RP9SFS-450M) features a forged 7075 T6 aircraft aluminum flat-top upper receiver paired with a Magpul enhanced trigger guard lower receiver, both of which are treated with a hardcoat black anodize finish. The 9” long medium-profile barrel is made of 4150 chrome-moly steel, sports a Melonite QPQ finish and has an M4-style feed ramp. The threaded muzzle is fitted with a much needed 3-chamber muzzle brake to tame felt recoil. The 7" long free float 6063 aluminum handguard has M-LOK accessory and QD sling attachment points. The end plate features a QD socket with a sling swivel provided.

This gun ships with a set of Kriss polymer flip-up sights. The smooth, pistol-style buffer tube is fitted with an SB Tactical wrist brace. Other features include a Hogue over-molded pistol grip, one five-round magazine and a hard side storage case. Suggested retail for the .450 Thumper is $1,254.

Latest

Army 250Th Part 4 6
Army 250Th Part 4 6

250 Years of the U.S. Army: From Vietnam to Today

For more than half a century, the U.S. Army's standard infantry rifle has undergone a remarkable transformation, from the battle rifles of World War II to the compact, modular carbines carried by soldiers today.

The Alpha Foxtrot Attila: Not Just Another 2011

In a marketplace filled with 2011-style pistols, Alpha Foxtrot decided to go a different direction with its Attila handgun design, which is built to use Shield Arms S15 magazines.

JP Morgan Rescinds Discriminatory Policy Against Gunmakers

In January, JPMorgan Chase joined Citigroup and Bank of America in rescinding policies discriminating against lawful businesses in the firearm industry—in this case, reversing their policy against lending to rifle manufacturers.

Remembering Past NRA President David A. Keene

David A. Keene, a prominent conservative leader and NRA President from 2011 to 2013, died on March 8, 2026, at 80 years old, from pancreatic cancer.

Semi-Automatic Bans Are Unconstitutional

If the logical application of the rule of law means anything in this constitutional republic, bans on massively popular semi-automatic firearms will be found unconstitutional.

New Handloading Helpers: The Latest Reloading Gear From RCBS

When Hodgdon Powder Company took over RCBS in 2024, company leaders said positive change was coming. By looking at the new products RCBS introduced in 2026, it’s clear they were right.

Interests



Get the best of American Rifleman delivered to your inbox.