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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.
These are Glock 17 length with a Glock 19 grip! This was a one time run and they are no longer available. $200 each, I paid the tax and shipping on these. Will trade for Glock 26 or Glock 19 receivers or 80% Glock 19 Polymer 80 receivers.
https://www.midwayusa.com/product/1020552143
Full Size 1911 but Double-stack, 1-Clip, Soft Case. There are abrasions on the elastomer grip but none on the elastomer frame. There are normal wear marks in a few locations (due to slide travel, safety, etc.). $550.00
(This is one of many of my recently passed brother's firearms)
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FDE Alpha V5 executive carry slide with match grade Live Free Armory barrel, fluted and recesses barrel comes with P-mag black or cobalt frame. (Complete besides sights) $800
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Bronze Live free Armory slide and barrel complete kit including P-mag. Choose cobalt or black...
I have a Polymer 80 olive drab green Glock 19 lower with jig/bits etc (virgin/unfinished) for sale for 165.00
I also have have a new Rockey Brass upper parts kit, new oem lpk and new US Patriot Armory barrel as well as stock used Glock plastic sights. And a aftermarket slide ( I think it’s US...
Photo 1&2
Grey ghost gen 4 slide, conversion guide rod and ring (Gen 4 to 3)Compact/Long Cobalt poly 80. (G17 upper g19 lower) no sights but can add them. $650
(Will sell sell slide no with no barrel for $360)
Photo 3&4
G19 Alpha V5 Executive Carry slide, Wilson combat barrel. Slide will come...
Had it sitting around for a year or so. Decided it’s not likely to be used. $75. Not really interested in trades, but will consider them. Ad will come down if not sold by next Wednesday.
Glock G17 complete build kit, great quality tin barrel, after market slide, OEM sights, polished pins and controls controls are extended. No trades, price is firm. $700
Complete G19 RMR cut, polymer 80 build kit. Steel rear sights tin threaded barrel, polished pins and controls, controls are extended. I also have a plain black OEM style barrel. The frame has its jig and box but has not been cut or mortified. Price is firm, no trades. $750
Pulled off a nearly new PTR91. Includes safety selector. Will work on all semi-auto guns. US made part, helps with 922R compliance.
Cash: $60
Trades:
- Ammo (223/556, 38/357, 308)
I have a few full size Polymer 80 (Glock 17) frame kits at $140 each plus shipping. One will fit in a USPS flat rate box $8.30. Call or text Richard at 8082825132.
Hello NWFA!
I’m looking for a Polymer 80 lower for the Glock 19 in FDE. Will pay up to $200 for one. Please reach out if u have one to sell. Thank you!
MUST GO THROUGH FFL
upper - Brownells rmr cut with window
Lower - serialized - bought from brownells
Barrel - don’t remember.
Upper parts kit - rocky brass & Zev
Trigger - Zev pro flat face
Extended take down
Extended slide release - Tyrant designs
had some trigger reset issues common to P80...
NIB Stock and cheek riser kit, never unpacked bought for project that never happened. Cleaning out guns, parts and accessories of projects not moving along as I have 5 different guns under build at smiths now. Not looking for any trades. Buyer pays shipping.