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A suppressor knocks down a lot of your muzzle signature, but anyone who spends time behind night vision knows there is still flash to deal with. That is exactly what this end cap handles. The JK155PROHFEC30 replaces the standard front cap on JK Armament 155 series suppressors with a three prong flash hider profile and integrated gas vents, cutting visible flash way down while also improving how gas moves out the front of the can. Less flash means your night vision stays clean and your position stays quiet, which is why this style of cap has become a favorite with nighttime hog hunters and anyone running a duty or tactical setup.
This is the PRO grade version, machined from 6AL-4V titanium with a black finish, so you get real strength at the muzzle without piling weight onto the end of your rifle. That matters more than people think, since every ounce out front changes how a suppressed rifle balances and swings. The high flow venting is the other half of the story. By giving gas an easier path forward, the cap helps tame the backpressure that suppressed gas guns are known for, which your bolt carrier and your face will both appreciate.
JK built this cap with 1-1/2 inch wrench flats, so a standard wrench is all it takes to pull your flat cap and thread this one on. No proprietary tools, no fighting it. This is the .30 caliber bore version, and matching the cap bore to what you are shooting is the way to get the most performance out of any JK can, whether that is .308, 6.5 Creedmoor, .300 Blackout, or anything else .30 cal and under.
Like everything JK Armament makes, this cap is machined in the USA and backed by their lifetime guarantee. If you run a 155 series suppressor and shoot in low light, this is the front cap upgrade that makes the biggest real-world difference.
This cap is made for JK Armament 155 series suppressors and threads on in place of the standard front cap. It will not interchange with the smaller 105 series, which uses its own cap sizes. If you own a 155 series can, this is a direct swap.
The Flash Reducer is closer to a traditional flat front cap with some added flash suppression built in. The High Flow Flash Hider is JK's most aggressive option, using three prongs plus built-in gas vents to dramatically cut flash signature while improving gas flow out the front of the can. If low light and night vision shooting are your priority, the High Flow is the one to run.
No. JK machined 1-1/2 inch wrench flats into the cap, so a common wrench is all it takes to remove your existing front cap and install this one. Most folks can do the swap in a couple minutes at the bench.
Yes, a .30 cal cap will safely pass anything .30 caliber and under, like 6.5 Creedmoor, .223, or .300 Blackout. That said, JK notes you get the best performance by matching the cap bore to the cartridge you are shooting, since a tighter bore keeps more gas working inside the suppressor. If you mostly shoot .30 cal rifles, this is the right pick.
| UPC | 850038425982 |
|---|---|
| Manufacturer | |
| Manufacturer Part Number | JK155PROHFEC30 |
| Model |
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