Join the #1 community for gun owners of the Northwest
We believe the 2nd Amendment is best defended through grass-roots organization, education, and advocacy centered around individual gun owners. It is our mission to encourage, organize, and support these efforts throughout Oregon, Washington, Idaho, Montana, and Wyoming.
Discuss firearms and all aspects of firearm ownership
Join others in organizing against anti-gun legislation
Find nearby gun shops, ranges, training, and other resources
Discover free outdoor shooting areas
Stay up to date on firearm-related events
Share photos and video with other members
...and much more!
low
A low-pass filter (LPF) is a filter that passes signals with a frequency lower than a selected cutoff frequency and attenuates signals with frequencies higher than the cutoff frequency. The exact frequency response of the filter depends on the filter design. The filter is sometimes called a high-cut filter, or treble-cut filter in audio applications. A low-pass filter is the complement of a high-pass filter.
In the optical domain, high-pass and low-pass have the opposite meanings, with a "high-pass" filter (more commonly "long-pass") passing only longer wavelengths (lower frequencies), and vice-versa for "low-pass" (more commonly "short-pass").
Low-pass filters exist in many different forms, including electronic circuits such as a hiss filter used in audio, anti-aliasing filters for conditioning signals prior to analog-to-digital conversion, digital filters for smoothing sets of data, acoustic barriers, blurring of images, and so on. The moving average operation used in fields such as finance is a particular kind of low-pass filter, and can be analyzed with the same signal processing techniques as are used for other low-pass filters. Low-pass filters provide a smoother form of a signal, removing the short-term fluctuations and leaving the longer-term trend.
Filter designers will often use the low-pass form as a prototype filter. That is, a filter with unity bandwidth and impedance. The desired filter is obtained from the prototype by scaling for the desired bandwidth and impedance and transforming into the desired bandform (that is low-pass, high-pass, band-pass or band-stop).
Gently used Glock 19 Gen 5 for sale.
Has factory installed Ameriglo night sights. Low round count.
Includes two 15 round mags and one 17 round mag with X-Grip mag extension, or three 15 round mags if preferred.
Includes factory case.
This is not the MOS version.
$399
Not looking for trades...
AR 15, chambered in 223 Wylde (5.56/223) Anderson lower with magpul stock and grip. B.C.A upper 16 inch spiral fluted heavy barrel, includes a 30 round pmag, will throw in a new set of magpul flip up sights and a box of 20 rounds of ammo for the right offer.Both the upper and lower have less...
Glock 22 for sale. 40 S&W. I have about 10ish 15 round mags and two 30 round magazines. I have the original box and paperwork. Also comes with the pictured holsters. No weapon light included at this point. The transfer will occur in Independence at 5150 Tactical.
This is a longshot.... pun intended. I dont think what Im looking for exists but Ideally Id like to buy one.
But I dont think it exists commercially so Im entertaining the idea of a DIY version, except Im not certain how I could secure it to the top pic rail? Looking for ideas on this if ones...
This a super clean, all original Sportster 1200S with only 12,700 miles. It has been maintened very well and always taken care of. The sportster 1200S was a limited run performance package added to some sportsters from 96-03. This one features dual front brakes, tachomter, fully adjustable...
2010 Harley Davidson FXDB Dyna Street Bob low miles, 2 owners
Selling my 2010 Harley Davidson Dyna Street Bob FXDB that has very low miles at only 17,000 with no issues whatsoever. I am the second owner. It has been well maintained, never abused and a great example of one of the best Harleys...
I'm looking for a low power variable optic, somewhere around the 1-4x or 1-6x range.
Here's what I have for sale/trade
PSA 5-25x FFP (new) $475 local, $500 shipped
PSA 6-24x FFP (mounted, not used) $475 local, $500 shipped
Primary Arms 7.62x39/.300 BLk ACSS reticle 3x prism optic (have 2) $225...
So got this steiner scope in trade and its an amazing optic but way more scope than i will ever use.
Simply put I doubt i will ever shoot out past 150yds
Model is steiner P4Xi 4-16 x 56mm front focal plane and illuminated reticle that has 3 night vision compatible settings and 9 standard...
With a cartridge load for a rifled firearm, bad things can happen if a charge is low.
What is the likely result of an undercharged shotshell load?
If using brass 12ga cases with large pistol primers, will primers begin to show flattening as charge levels get too high?
Let me know if you have any you would like to sell or trade. No removable foam type, just regular low end type in any condition as long as it has foam and latches closed. Thx!
B&T Mounting Rail NAR Low Profile Mount
For HK MP5/SP5/clones, comes with all hardware needed.
I take PayPal friends and family/Venmo
Shipping OK, S/H free
No trade requests please.
No separate part sales please
No face-to-face sales requests please
I'm looking for an early 1903 with the sheriff's on the serial number. Preferably in as close to as manufactured condition as possible. I understand that many were arsenal rebuilt and many re barreled.
Been playing musical scopes and trying out various heights to see what works best for me... well the music has stopped and I have 3 sets of very lightly used rings for sale.
American Rifle Company M10 35mm x 24mm - $115
Nightforce 4-screw 34mm x 1.375" - $115
Zeiss 34mm x 1.125" w/ integrated...
I have an almost new set of ARC 34mm 24mm (lows) that are almost new. They were properly torqued with fix it sticks and they have seen 2 range trips and have maybe 1-2 super small scuffs but none break the finish.
I am looking to trade for 30mm lows (+/- 1") of similar quality.
Looking to sell my staccato XL comes with 3 mags and case. I’ve shot about 200 rounds through it. It’s amazing I love it but I want a HK SP5 now.
Looking to get $3200 or work out a deal to trade for an sp5.