New Truck Gun with Rosco Mfg (Hurricane Debby Edition)

It's a kind of shitty day outside — we're on the verge of what might be Debby, feeling the outer bands roll in — so we filmed this one under the wood shop overhang. About six or seven months ago we talked about the gun we travel around with. Today we're bringing you the new iteration of the truck gun and the reasoning behind every piece of it.

The upper is a Rosco complete K9 Wedge, 12.5-inch, 5.56 barrel — a collab they did with Sage Dynamics running a proprietary patrol-length gas system. It's not adjustable, and supposedly you don't need an adjustable gas block with this system; today was my first time running it suppressed and it didn't miss a beat. The barrel is 416R stainless — better performing, better accuracy, and while you might give up some longevity with 416R, I doubt I'll ever put enough rounds through this gun for that to be the issue. The Wedge Lock handguard runs the pic rail the full length with M-LOK everywhere, and the anodizing is a sharper black than I'm used to seeing on handguards.

The lower is from ZRO Delta, and here's why I really like them: quality, American-made, and not expensive at all. The non-ambi versions run right around a hundred bucks all the time — no sale needed — and the full ambi is only about $130-140. This one has the ambidextrous bolt release and mag release but not the ambi safety selector, which I wasn't super worried about on this gun. Stock trigger is still in it for now — I just bought a Geissele SSA-E that'll most likely go in — and I swapped the stock furniture for a Magpul grip and an SB Tactical SBA3 brace, since this is a pistol build.

Why a can on a truck gun? My question to you is why would you NOT put a can on your truck gun. You're most likely not going to have hearing protection handy before you engage a target, so instead of blowing out your eardrums — or the eardrums of anyone else in the car — the Otter Creek Polonium-K knocks the decibels down and changes that 5.56 crack into something that doesn't hurt everybody around you. It's probably one of the best sounding cans out there. And if theft risk is the thing deciding whether you keep a gun in your vehicle, you're probably not thinking about it the right way — the difference between a $600-700 build and this $1,300 suppressed build isn't all that great.

On the range it ran great — mostly A and C zone hits on steel and static targets without really sighting in the optic beyond a bore laser thrown up on the wall. It shoots super flat, recoil mitigation is amazing, and ejection stayed consistent right around 2:30 to 3 o'clock suppressed. The one problem: I threw on a no-name ambidextrous charging handle I had lying around, and I was taking gas straight to the face the whole session. That's the charging handle, not the gun — a Radian Raptor-LT is going in the second I get home.

The optic is the Holosun SCRS, which I literally picked up the day we filmed. I love the footprint and profile, and the 65-ish MOA circle-dot reticle is crystal clear and daylight bright — but it's completely solar powered with no battery, and this gun is going to sit put away in a dark truck. So it most likely won't stay. I'll probably throw a Sig Romeo 4S on here — solar pad on top plus a battery, best of both worlds — and give the SCRS a home on a range gun where it can shine.

Bottom line on the build: the money happens in the upper, not the lower. A hundred-dollar ZRO Delta lower with a trigger swap is perfectly acceptable — I even changed the trigger in my BCM — and this Rosco 12.5 patrol-length upper is phenomenally built by two fantastic companies. This is my primary truck defense gun now.