POTD: De Lisle Carbine in 375 Raptor

Hrachya H
by Hrachya H
POTD De Lisle Carbine in 375 Raptor (1)

For today’s Photo Of The Day, we have pictures of a very cool project by a company called Cotton Branch Custom Firearms. It’s a Lee-Enfield rifle converted to a De Lisle carbine configuration except instead of .45 ACP it is chambered in 375 Raptor. The latter is a .375-caliber short-action cartridge based on the .308 Winchester case.

Here is what Joshua Herring, the owner of Cotton Branch Custom Firearms, said about this project:

In January of 2022, I started what would eventually be referred to as the De Lisle Project. It was a commitment to build 40 De Lisle Commando Carbines. Somewhere in the middle of that, one of my regular customers pitched the idea of doing a De Lisle build in 375 Raptor. He had already done his due diligence and was convinced that it would work. I dug into it for myself and it didn’t take long to realize it probably would. So when the time came, I sourced an Indian Lee Enfield and started making parts for the build. He was right. It worked fine. The gun chambers, extracts, and ejects on par with any quality new production rifle. It’s a Lee Enfield No.1 Mk III Ishapour that was originally chambered in 7.62×51. I removed the front half of the gun and replaced it with a titanium integral silencer based solely on the De Lisle design, with a barrel machined from a 5R stainless blank. The can has a huge open chamber in the rear with a blast collar over a ported barrel. Gas pressure has to change directions several times in order to escape the blast chamber and then travel through another 13 inches of suppressor to make it to the atmosphere. So by the time it gets there, there’s really not much left of it. I believe that’s what makes the design so successful, the sheer volume inside the can along with a complicated exit path, and other factors but those two being the main contributors. In this particular caliber, supersonic suppression is about average, but subsonic suppression is absolutely phenomenal. We were very pleased with the outcome.

I think this is a very Hot Gat! What do you think about the De Lisle carbine in 375 Raptor?

To learn more about Cotton Branch Custom Firearms and their products, visit their Instagram page HERE.

Pictures by Cotton Branch Custom Firearms

Hrachya H
Hrachya H

Managing Editor Being a lifelong firearms enthusiast, Hrachya always enjoys studying the history and design of guns and ammunition. Should you need to contact him, feel free to shoot him a message at Hrachya@TheFirearmBlog.com

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2 of 19 comments
  • Colonel K Colonel K on May 31, 2024

    Take my money!

  • Old Gringo Old Gringo on May 31, 2024

    As a retired military guy who carried weapons not normally in the DOD inventory, my question is the purpose? Coolness and uniqueness is a purpose for the curious among us. But guns all have an appropriate mission. I shoot suppressed and have cans designed for full auto AK fire and cans for 22 lr and so on. Each gun has a range of purposes. Some are just to shoot paper targets and look cool. Others are to quietly dispatch rabbits and even humans, others to stop attacking beasts including humans.

    So, what might be a purpose for this one? A Mac10 suppressed or a Thompson suppressed are cool guns when fired full auto. Neither is very good for walking knee deep in rice paddies. The one does not look very portable either.

    So, the threshold question. If they had only threaded the gun as they found it, added a quality suppressor, how much better is this one that just a simple device stuck on the barrel. I have suppressors I run on barrels from 4 inches to 24 inches, so where is the value in terms of less sound? I have an Enfield already cut to 19 inches. I think when I have a couple hours I will thread it and see what value a suppressor provides to the .303 round. An excellent round on it's own terms. I just do not see any use for this one, except for the cool factor.