Home AR-15 A Daniel Defense AR-15 with a Built in Suppressor: The M4 ISR

A Daniel Defense AR-15 with a Built in Suppressor: The M4 ISR

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In this episode of TFBTV, James Reeves performs a full review of the Daniel Defense DDM4ISR, or Daniel Defense Integrally Suppressed rifle. James reviews this .300 Blackout AR-15/M4-type rifle with a built in, permanently attached suppressor on the range in semi-auto format, and with a full auto lower to see how it performs, and compares it to a suppressed bolt action rifle as well. How does the ISR stack up? Watch today’s video to find out.

According to Daniel Defense’s tech specs for this rifle:
“The DDM4ISR is our Integrally Suppressed AR15 style firearm optimized for the 300 Blackout cartridge. Built around a 9 inch Cold Hammer Forged barrel that is fluted along with a target crown and a standard pistol length gas system, this versatile, high-performance rifle is the complete package, accurately delivering both subsonic and supersonic projectiles downrange with unrelenting reliability. Because the suppressor is an integral part of the barrel, this firearm is ready for service right out of the box. There’s no attaching a suppressor and wondering if it’s mounted correctly and/or properly aligned. There’s no re-zeroing for suppressed vs. unsuppressed fire.

The DDM4ISR’s integral suppressor extends the barrel to an NFA-required 16 inches in length, so this platform is not classified as a Short Barreled Rifle (SBR) and therefore only requires a single tax stamp (for the suppressor). The suppressor’s lightweight outer tube is constructed of durable, heat-resistant metal alloys and coated with a protective high-temperature Cerakote-C finish, which is able of withstanding extreme temperatures and harsh environments. The suppressor is also user-serviceable, so its baffle core can be easily removed for periodic cleaning in order to maintain peak performance.

The DDM4ISR comes standard with the MFR XL 15.0 handguard, which features a continuous 1913 Picatinny rail on its top, for the mounting of iron sights or optics, and Keymod attachment points on the sides and bottom. The independently ambi GRIP-N-RIP Charging Handle accommodates left- and right-handed shooters. This rifle also comes with the ergonomic Daniel Defense Buttstock and Pistol Grip.”

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33 COMMENTS

  1. Its a joke, But now we need someone to come up with a clip on "wet suppressor gas priming" device. Like NOS on a car you just see some range monkey priming his suppressed 300BO LMAO PSS PSSSS

  2. Someone should make a footpad for ar mags that has a reverse slant inside the socket and a flat bottom. That way you could monopod with the magazine and not need to teeter it on the rear cornor of the mag.

  3. How's the gas to the face? The big advantages of an integral are superior handguard integration (it's where it should be) and the gas system tuned to the suppressor beyond what you can achieve with a conventional detachable suppressor and an adjustable gas block.

    The competition is fierce. The Gemtech Integra has a functioning bore evacuator built into the barrel, like on a tank. Gas to the face is like an unsuppressed rifle. Conventional monocore design, but good and comes apart for user cleaning. SIG's integrals use their state-of-the-art flow-through suppressors (comparable to OSS), as seen on the new US M5 rifle. Also very low gas to the face.

    Daniel Defense has a reputation for quality, but so does Gemtech and SIG. SIGs rifles see military use and Gemtech's products are tested to meet military standards, including a full-auto test with a full loadout of magazines. So having the seal of quality of a reputable manufacturer isn't enough. At this price, I would want superior performance.

    There are many integrally suppressed AR-15s on the market now, of varying quality. Too often, they just look like a conventional suppressor was welded to a barrel with a gas port size adjusted for it. Slip over a handguard, and you've got an integral. They're rarely directly compared. Well, if I'm paying thousands I want to know that it's better. Lighter, more accurate, quieter, better tone, more durable, more reliable, better build quality or materials, superior design. Any or all of the above. They should stake a claim on something! Not just "we make one, too", but "here's what we do better than anyone else and why you want to buy our version".

  4. I mean, yeah it’s cool and all. But with 300 Blackout being around $1.00 a round or more and with the insane cost of that ISR, no thanks. I’d rather spend money on a more affordable platform using more affordable ammo and just invest the rest in some tactical courses

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