7 Most Expensive Machine Guns Sold on GunBroker | May 2025
GunBroker May 2025 Report: Highest-Priced Machine Guns Sold by Auction
May 2025 was a blockbuster month for NFA collectors, with machine guns commanding premium prices and reflecting the growing demand for rare, transferable automatic weapons. Among the highlights of the 7 most expensive machine guns sold on GunBroker report is the Colt SP1 Conversion M16, a pre-1986 registered full-auto build featuring a compact 7.5″ POF piston upper. It sold for $26,000 after a single, confident bid—proof that serious buyers are still out there for the right piece.
Also making waves, a PAWS M16 ZX16A1, formerly used as a Hollywood prop and fully restored by Sons of Liberty Gun Works. With 49 bids and a sale price of $27,140, this Vietnam-style configuration proved that screen-used firearms continue to capture investor interest.
Topping the list is the Fleming HK Registered Sear Pack, a versatile, transferable trigger group compatible with MP5s, G3s, and other HK platforms. It fetched $45,995, driven by its adaptability and collector prestige. These standout sales showcase the wide-ranging appeal of transferable machine guns—from compact conversions to cinematic legends and modular German engineering.
Thinking of selling your valuable guns? Now might be the time
— collectors are hungry, and the market is hot.
Don’t Miss the March & April 2025 Most Expensive Machine Guns Sold on GunBroker Reports!
Scroll down to discover more details on the most expensive machine guns from the May 2025 report and if you want to follow the action in real-time just click “Watch” on any item until it’s Going. Going. Gun.®
#7: Colt SP1 Conversion Machine Gun M16 5.56MM 7.5″
05/20/2025, a seller sold Item #1094666290. Colt SP1 Conversion Machine Gun M16 5.56MM 7.5″. Final Price for listing: $26,000.00. This item received 1 total bid from 1 bidder in 1 state. Seller listed the item condition as Used.
was sold for $26,000.00 on 05/20/2025
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#6: PAWS M16 ZX16A1 5.56 NATO Machine Gun M-16 Full Auto Movie Gun
On 05/6/2025, a seller sold Item #1098363789. PAWS M16 ZX16A1 5.56 NATO Machine Gun M-16 Full Auto Movie Gun. Final Price for listing: $27,140.00. This item received 49 total bids from 12 bidders in 7 states. Seller listed the item condition as Used.
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#5: Frankford Arsenal XM-177 5.56 NATO 16″ FA-XM177
05/29/2025, a seller sold Item # 1106062104. Frankford Arsenal XM-177 5.56 NATO 16″ FA-XM177. Final Price for listing: $29,975.00. This item received 74 total bids from 24 bidders in 18 states. Seller listed the item condition as Used.
#4: Colt M16 M16A1 Machine Gun!
On 05/4/2025, a seller sold Item #1101994620. Colt M16 M16A1 Machine Gun! Final Price for listing: $34,550.00. This item received 43 total bids from 6 bidders in 4 states. Seller listed the item condition as Used.
#3: Colt M-16A1, Machine Gun
On 05/9/2025, a seller sold Item #1103929070. Colt M-16A1, Machine Gun. Final Price for listing: $35,054.00. This item received 12 total bids from 6 bidders in 4 states. Seller listed the item condition as Used.
#2: Colt XM16E1 603 M16 5.56 US Property Movie Gun
On 05/11/2025, a seller sold Item #1102655993. Colt XM16E1 603 M16 5.56 US Property Movie Gun. Final Price for this listing: $39,550.00. This item received 30 total bids from 12 bidders in 10 states. Seller listed the item condition as Used.
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#1: Fleming HK Registered Sear SEF Pack MP5 9mm G3 HK53
On 05/11/2025, a seller sold Item #1102513884. Fleming HK Registered Sear SEF Pack MP5 9mm G3 HK53. Final Price for this listing: $45,995.00. This item received 56 total bids from 11 bidders in 8 states. Seller listed the item condition as Used.
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