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The Fletcher ST-174-HUB-LH is a simple part that solves a real problem: you own a HUB-pattern suppressor, but you want the speed and repeatability of the CAT QD system. This mount bridges that gap. It threads into the industry-standard 1.375×24 HUB interface on your can, and the business end features left-hand 1×16 threads with a precision taper that mates up with CAT QD muzzle devices. Spin the suppressor on, snug it against the taper, and you have a solid lockup that returns to the same position every time.
The 1x16LH interface has become a favorite for good reason. The coarse left-hand threads are big and strong, and the tapered seating surface keeps carbon from creeping onto the threads or migrating down the outside of the mount. That means the suppressor comes off clean after a long range day instead of fighting you like a direct-thread can that has welded itself to the barrel. Left-hand threading also works with the direction of bullet torque, so the mount stays tight under sustained fire rather than backing off.
Set up each of your rifles with a compatible 1x16LH taper-mount muzzle device and this single mount lets one HUB suppressor float between all of them. No re-zeroing headaches from sloppy mounting, no thread wrenching at the range, just a quick spin on and off. As with any suppressor mounting setup, check bore clearance and run an alignment rod before sending rounds, especially when moving a can between different calibers.
Fletcher Rifle Works designs and machines their parts in-house in Texas, and the attention to detail shows in the thread engagement and taper fit on this piece. If you have been eyeing the CAT QD ecosystem but did not want to buy a whole new suppressor to get there, this is the affordable way in.
If your suppressor uses the industry-standard 1.375×24 HUB interface, this mount threads right in. That covers a huge range of modern cans from most major manufacturers. It replaces whatever HUB cap or direct-thread adapter is currently installed on the front module of your suppressor mount end.
It pairs with 1x16LH taper-mount muzzle devices, the pattern used by the CAT QD system and originally developed by CGS Group. The interface is standardized across compatible flash hiders and brakes, so you can outfit several rifles and move one suppressor between them. Just confirm bore clearance when swapping across calibers.
No, this is not a direct-thread adapter. It converts your HUB suppressor to accept 1x16LH quick-detach muzzle devices, so you will need a compatible taper-mount flash hider or brake installed on the barrel. Once that is in place, the suppressor spins on and off in seconds.
Left-hand threads work with the rotational forces of firing, so the suppressor tightens rather than loosens under recoil. The tapered seating surface also gives consistent alignment shot after shot and keeps carbon off the threads. The end result is faster swaps, easier removal after a hot range session, and repeatable point of impact.
| UPC | 850044307753 |
|---|---|
| Manufacturer | |
| Manufacturer Part Number | ST174HUBLH |
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