#flowthroughsuppressor

Range Report: Geissele 13.9” Super Duty

Took the new Geissele 13.9” out for her first live fire. Weather was solid—sunny, humid, about 80°F with barely any wind. Perfect conditions for zeroing and initial shakedown.

Ammo: Magtech 77gr OTM Total rounds fired: 43 Suppressor: HUXWRX Flow 556K

Zeroing

Nightforce ATACR 1–8x zeroed at 100m.

Aimpoint ACRO P2 (mounted at 12 o’clock) zeroed at 33m.

Zeroed with 5-round groups. As expected, the initial impacts with both optics were well off target and required significant corrections to get on paper. From there, it was a matter of walking in smaller adjustments until both were dead on. Groups at 100m through the LPVO were right about 3/4 of an inch which is just less than 1 MOA (when you convert meters to yards). Groups with the red dot at 33m were about the size of a dime.

Impressions

The mid-length gas system and the Flow 556K combo made for a soft, smooth recoil impulse.

The Radian Raptor-SD charging handle did its job—noticeably less gas to the face than I’ve experienced with RC2 setups.

The rifle balances well. 13.9” was absolutely the right call. It feels compact and fast, even suppressed, without sacrificing capability at 500–600m.

SSA-EX trigger is exactly what you'd expect from Geissele—clean break, crisp reset. It’s not flashy, it just works.

While the Geissele Super Duty line isn’t budget-tier, it’s not boutique either. These rifles aren’t made to sit in a safe—they’re built to perform, every time, in the worst conditions imaginable. That is, assuming you do your part. They’re not showpieces. They’re tools. Take care of them, and they’ll take care of you.

No malfunctions. No drama.

Note on the Mount

I’m still running the Badger COMM mount at 1.7”. When I first set it up, I wasn’t planning on running a red dot, so it was positioned purely for LPVO efficiency.

Now that I’ve added the ACRO, I’ve found that getting a proper sight picture through it requires sacrificing any cheek weld. Not ideal. It’ll be fine under NODs, but I’m already looking at a lower Reptilia mount to clean that up. Not a top priority, but something to address.

What’s Next

I’ll be back at the range in the coming days to:

Work longer-range engagements (200m and out).

Practice transitions between the LPVO and the red dot under time.

This rifle is dialed in and ready to work. Now it’s about putting in reps.

Train like your life depends on it… because it does.

De Oppresso Liber.