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The MasterPiece Arms DN5 in 30 Cal is the beefed-up version of MPA's popular DN5 line, built specifically for cartridges that dump extra gas pressure and volume behind the bullet. Think .308 Winchester, 7mm PRC, 7mm SAUM, and anything in the .30-caliber-or-smaller family. Machined from black nitrided high tensile strength steel, it shrugs off the heat and blast that come with hot loads and a full match day of shooting. The multi-port design redirects propellant gases to fight recoil, and the port pattern vents upward to keep the muzzle pinned down.
Recoil is where this brake earns its keep. MPA developed the porting with their own testing system and lands right around a 63% reduction in felt recoil. That kind of drop means less rifle jump, so you can watch trace, call your own hits and misses, and get back on target for a fast follow-up without breaking position. On a bolt gun running .308 or a 7mm PRC, that translates directly into cleaner spotting and better stage times.
Installation runs on a jam nut collar system, which is a nice touch if you've ever fought with shim stacks. You thread the brake and nut into position and jam them against each other at the right spot, no ground shims required. Two machined flats let you level the brake body and give an adjustable wrench something to grab. That setup keeps the bore of the brake perpendicular to the shoulder of the barrel, which helps hold your point of impact steady after install.
One thing worth knowing: this is the standard-action 30 Cal brake, tuned for .308-length rounds and smaller. It is not built for the big long-action magnums like 300 Norma, 300 PRC, or 300 Win Mag, so match it to the right rifle and you'll be set. It ships with a 5/8-24 thread, the common pitch for most .30-caliber barrels.
It's designed for cartridges that generate higher gas pressure and volume in the .30-caliber-and-smaller range. Common pairings include .308 Winchester, 7mm PRC, and 7mm SAUM. Just keep in mind it's tuned for standard-action rounds, not the long-action .30-caliber magnums.
The brake comes threaded in 5/8-24, which is the standard pitch on most .30-caliber rifle barrels. Check that your muzzle is threaded 5/8-24 before ordering. If your barrel isn't threaded yet, a gunsmith can cut it to spec.
MPA developed the porting on their own testing system and reports roughly a 63% reduction in felt recoil. In practice that means far less muzzle jump, so you can spot trace and see your hits without coming out of position. That's a big part of why it's popular for precision and PRS-style shooting.
Yes, the jam nut collar system is built to make setup straightforward. You thread the brake and nut into position and jam them together, no ground shims needed. The two machined flats let you level the body and give an adjustable wrench a grip, and many folks add a threadlocker like Rocksett to keep everything put.
| UPC | 866803009233 |
|---|---|
| Manufacturer | |
| Manufacturer Part Number | DN5BRAKE-30 |
| Shipping Weight | 0.445 |
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