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
Buy, sell, and trade in our classified section
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!
Plate tectonics (from the Late Latin tectonicus, from the Greek: τεκτονικός "pertaining to building") is a scientific theory describing the large-scale motion of seven large plates and the movements of a larger number of smaller plates of the Earth's lithosphere, since tectonic processes began on Earth between 3.3 and 3.5 billion years ago. The model builds on the concept of continental drift, an idea developed during the first decades of the 20th century. The geoscientific community accepted plate-tectonic theory after seafloor spreading was validated in the late 1950s and early 1960s.
The lithosphere, which is the rigid outermost shell of a planet (the crust and upper mantle), is broken into tectonic plates. The Earth's lithosphere is composed of seven or eight major plates (depending on how they are defined) and many minor plates. Where the plates meet, their relative motion determines the type of boundary: convergent, divergent, or transform. Earthquakes, volcanic activity, mountain-building, and oceanic trench formation occur along these plate boundaries (or faults). The relative movement of the plates typically ranges from zero to 100 mm annually.Tectonic plates are composed of oceanic lithosphere and thicker continental lithosphere, each topped by its own kind of crust. Along convergent boundaries, subduction, or one plate moving under another, carries the lower one down into the mantle; the material lost is roughly balanced by the formation of new (oceanic) crust along divergent margins by seafloor spreading. In this way, the total surface of the lithosphere remains the same. This prediction of plate tectonics is also referred to as the conveyor belt principle. Earlier theories, since disproven, proposed gradual shrinking (contraction) or gradual expansion of the globe.Tectonic plates are able to move because the Earth's lithosphere has greater mechanical strength than the underlying asthenosphere. Lateral density variations in the mantle result in convection; that is, the slow creeping motion of Earth's solid mantle. Plate movement is thought to be driven by a combination of the motion of the seafloor away from spreading ridges due to variations in topography (the ridge is a topographic high) and density changes in the crust (density increases as newly formed crust cools and moves away from the ridge). At subduction zones the relatively cold, dense crust is "pulled" or sinks down into the mantle over the downward convecting limb of a mantle cell. Another explanation lies in the different forces generated by tidal forces of the Sun and Moon. The relative importance of each of these factors and their relationship to each other is unclear, and still the subject of much debate.
Selling a condor Sentry plate carrier in black with a pair of 10x12 ar500 level 3+ lightweight plates with trauma pads. Plates have the build up coating on them. Never used other than tried it on. Asking $400
Looking for OEM RMR Optic Mounting Plates for the 509 Tactical. Two pieces and the screws.
- Plate #502
- Insert #506
- Screws (2) #511 .530"
Tell me you put on a Delta Point or Vortex and you have them laying around. Please, Please, Please.
For sell is Spartan Body Armor AR500 Set 2 Plates. This is level III rated and has never been carried. Size is 10"x12". One plate is single curved and one is flat. This armor is coated to reduce bullet spalling upon impact. Both plates are in the shooters cut.
Plates like these MSRP at $183.74...
AWS Operators Choice Plate Carrier size Medium, x2 RMA 1155MC 10x12 Plates, 5.56 Triple Kywi up front, TQ plus Holder, Kbar TDI with sheath one wrapped, Esstac Daeodon Hydration carrier with 3L Source Bladder. Links below to product pages. Everything is in new or like new condition only worn for...
Selling cheap because their taking up space
Safelife Lv4 ICW plates was my first purchase and never got a lv3 backer, would only recommend for someone with a soft Lv3 vest that accepts plates only. $175
BULLETPROOF-IT STAR647 plates, consecutive SN's. Lv3 plates. STAR 647 is not AR500/AR550...
I need two sets of C&H precision plates for the G43x/48 Holosun 407/507k. I have both a Glock 43x mos and a Glock 48 mos. I know it’s a stretch but I would rather give a member my money before I resort to buying it online. Thanks guys
Tacticon Plate Carrier in black w/plates,cumberbund and triple rifle/pistol mag pouch. Safelife Defense 10x12 LV4 ICW ceramic/poly plates(these are not rated Lv4 as a stand-alone plate) I have paperwork from a company here in Oregon on their testing they did for these plates. $350
Three lightly used Sig MPX Taran tactical +11 base plates with springs. Three different colors. Not beat up and never dropped.
New are like 36 each plus tax and shipping
Asking $95 for all three. Shipping paid by buyer
Trades would be sig mags or open to others just shoot me...
Bought these from another member here a while back as a spare set. Now up for sale!
Premium Hesco L210 bullet proof plates (2)
Excellent condition, recent manufacture
Never dropped or dinged
Lightweight and thin!
Also have a plate carrier available upon request
Asking 280$ for both plates
I have a T.Rex Arms AC1 plate carrier in ranger green for sale, along with a pair of Hesco L210 Special Threat plates (size large). This whole setup is in excellent like-new condition and has never been worn. I bought them for my partner who has decided she isn't interested in body...
3, nearly new, 25 round Magpul pmags with ranger plates installed and cover caps. These are for .308/762x51, worked in both my Remington 700cp and PSA10.
$25 per or $60 for all 3, may also have the original baseplates, but no promises till I rummage around.
Local meet in Eugene, cash...