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!
polymer
A polymer (; Greek poly-, "many" + -mer, "part") is a large molecule, or macromolecule, composed of many repeated subunits. Due to their broad range of properties, both synthetic and natural polymers play essential and ubiquitous roles in everyday life. Polymers range from familiar synthetic plastics such as polystyrene to natural biopolymers such as DNA and proteins that are fundamental to biological structure and function. Polymers, both natural and synthetic, are created via polymerization of many small molecules, known as monomers. Their consequently large molecular mass, relative to small molecule compounds, produces unique physical properties including toughness, viscoelasticity, and a tendency to form glasses and semicrystalline structures rather than crystals. The terms polymer and resin are often synonymous with plastic.
The term "polymer" derives from the Greek word πολύς (polus, meaning "many, much") and μέρος (meros, meaning "part"), and refers to a molecule whose structure is composed of multiple repeating units, from which originates a characteristic of high relative molecular mass and attendant properties. The units composing polymers derive, actually or conceptually, from molecules of low relative molecular mass. The term was coined in 1833 by Jöns Jacob Berzelius, though with a definition distinct from the modern IUPAC definition. The modern concept of polymers as covalently bonded macromolecular structures was proposed in 1920 by Hermann Staudinger, who spent the next decade finding experimental evidence for this hypothesis.Polymers are studied in the fields of biophysics and macromolecular science, and polymer science (which includes polymer chemistry and polymer physics). Historically, products arising from the linkage of repeating units by covalent chemical bonds have been the primary focus of polymer science; emerging important areas of the science now focus on non-covalent links. Polyisoprene of latex rubber is an example of a natural/biological polymer, and the polystyrene of styrofoam is an example of a synthetic polymer. In biological contexts, essentially all biological macromolecules—i.e., proteins (polyamides), nucleic acids (polynucleotides), and polysaccharides—are purely polymeric, or are composed in large part of polymeric components—e.g., isoprenylated/lipid-modified glycoproteins, where small lipidic molecules and oligosaccharide modifications occur on the polyamide backbone of the protein.The simplest theoretical models for polymers are ideal chains.
This is at the Outdoor Super Store. I have made purchases here before and all went well. The price includes free shipping.
https://www.sportsmansoutdoorsuperstore.com/products2.cfm/ID/253327 They have others as well
This has everything you need except a lower parts G19 Gen 3 (frame) completion kit, which are easy to find for $50-$75.
LFA Elite black RMR complete slide with Combat Armory radiation green threaded match grade barrel & Amerigo suppressor sights with orange front night sight, and new Riton...
Description: Zenith Firearms MKE Polymer 30 Round Magazine, 5.56mm. Manufactured from smokey amber polymer, this quality 30 round magazine is produced for the Zenith roller-delayed Z-43P firearms chambered in 5.56x45mm or .223 Rem. This genuine Zenith mag is perfect for extending your operation...
Hey guys, looking for some input on selecting a magazine follower.
my HK currently has polymer followers and they have worn through use to the point that has caused a significant "lip" or "bur" where the case slides out of the magazine. I believe this is causing the failures to feed (bullet...
Brownells Serialized and factory drilled Polymer 80 PF940C for Glock 19/23. Item is used but in good condition. About 150 rounds fired through gun before part out. ALL INTERNALS WERE HAND POLISHED PRIOR TO ASSEMBLY. Internals are gen 3 with ejector upgrade part 30274. Sold as shown. No returns...
Gun is in the Clackamas area and transfer needs to occur in this general vicinity. Trades for other handguns will be considered but pics must be included with offers.
Polymer 80 PFC9 9mm. This is a complete factory Polymer 80 built gun. FFL transfer is required. Unfired. I bought it wishing...
Three Arsenal Bulgaria Circle 10 "waffle pattern" 7.62x39mm black polymer 40 round magazines.
Brand new (never used / loaded or inserted) condition ~ came from KVAR with no wrapper.
* True mil-spec magazines
* Steel reinforcements front and back
* Steel locking lugs
* The only polymer magazine...
FTF on the westside. I am willing to ship on the buyer's dime.
HiViz Fiber Optic Rear Sight for Henry Rifles with tool and extra pipes $20
Bushnell TRS-25 Red Dot (no riser). Original Pre "Trophy" series. $50
SIG SB15 Brace. New In Box $65
SIG P365 Standard Black Take off Grip...
Item is lightly used. I ran about 150 rounds through the gun only and now shoots very well. Item is in good condition (minimal scratches on barrel and no chips/dings). Selling as is no returns.
Must meet sell at an FFL.
Gun Built as recommended by marinegunbuilder (youtube)
Parts List:
Glock...
Selling only, Package deal for Kit, parts, and complete slide
Everything in 43x slide is new, the OEM slide, KM Tactical internals, OEM G43 barrel, and green fiber optic sights.
New P80 PF9SS kit jig, bits, etc.
New MDX Corp Lower,Frame parts kit for completing PF9SS, G43
New 2 Ammend G43...
I have 3 of these complete lowers available. These are the newest design from KE Arms, very light and tough, whole lower weighs 1 lb 12 oz. And these are complete, ready to attach to an upper and go. I have over 1000 rounds through mine so far and still going strong, I've attached a picture of...
Selling the furniture off my Arsenal 107
----- the stock has some cosmetic damage, due to needing the force of 1000 oxen to remove from my rifle----
It still bolts up fine and functions fine, just has some minor cosmetic damage (pictured)
Could be cleaned up a bit and made to look better...
These are polymer with metal reinforcements. I used to have one of their 9mm AR lowers and like it a lot.
Untouched, black polymer lowers. Come with jigs and screws to hold the jigs together.
Link to TN Arms website: https://tnarmsco.com/ar15-80-receiver-w-drilling-jig/
Just want to get back...