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ap5
AP5 (also known as APV, (2R)-amino-5-phosphonovaleric acid, or (2R)-amino-5-phosphonopentanoate) is a chemical compound used as a biochemical tool to study various cellular processes. It is a selective NMDA receptor antagonist that competitively inhibits the ligand (glutamate) binding site of NMDA receptors. AP5 blocks NMDA receptors in micromolar concentrations (~50 μM).
AP5 blocks the cellular analog of classical conditioning in the sea slug Aplysia californica, and has similar effects on Aplysia long-term potentiation (LTP), since NMDA receptors are required for both. It is sometimes used in conjunction with the calcium chelator BAPTA to determine whether NMDARs are required for a particular cellular process. AP5/APV has also been used to study NMDAR-dependent LTP in the mammalian hippocampus.In general, AP5 is very fast-acting within in vitro preparations, and can block NMDA receptor action at a reasonably small concentration. The active isomer of AP5 is considered to be the D configuration, although many preparations are available as a racemic mixture of D- and L-isomers. It is useful to isolate the action of other glutamate receptors in the brain, i.e., AMPA and kainate receptors.
AP5 can block the conversion of a silent synapse to an active one, since this conversion is NMDA receptor-dependent.
Up for sale is my HK SP5 (actually SP5L but converted to an SP5 by S&H Arms, a renowned HK gunsmith; tri-lug and threading remain intact). It is in excellent condition with only a few small scuffs and some paint wear on the trilug. Cocking tube is perfectly centered, magazines fit snugly with...
Up for sale is my lightly used Safety Harbor KES MP5 telescoping brace with GHW Tailhook. This is one of the best braces on the market and is very solid with terrific machining.
$340 shipped.
New Never fired, Heckler & Koch SP5 Pistol
$3000 obo, you pay shipping/insurance
no tax
New with original cardboard box with matching serial.
Includes factory H&K soft case, 2 - 30rd factory mags & all accessories, tools, etc.
Only selling to fund my MP5SD build project.
If not in Portland...
I have an SBT5A brace that originally came with a CZ scorpion adapter, but I’d like to swap it out and put the brace on my AP5 but now I need a MP5 style adapter for it which I can’t seem to find anywhere. If anyone would like to sell me an adapter for the brace or knows a place where I can get...
Anyone interested in the MP5 platform, but not for $2K, the price of the Turkish built ( on HK tooling) MP5 clones has plummeted to $1199 for the "core" gun or $1299 for the gun with an SB side folder...
https://atlanticfirearms.com/century-ap5-pistol-HG6034AB-N...
Up for sale is my lightly used POF MP5. This particular example has a nice finish and good overall assembly and has never malfunctioned with standard 9mm ammunition from 115 to 147 grains. The pistol includes one 30 round POF magazine, one KCI Gen2 30 round magazine, an MKE optic rail with new...
For trade is my brand new, unfired MKE AP5-P. Will come with SB folding brace, original box and 2 factory mags.
Looking to trade for IWI Tavor, Sig MCX, Bren, Daniel Defense uppers, LPVOs. Let me know what you have.
Feel free to PM here or preferably text me at
(360) 980-5418
New Never fired, Heckler & Koch SP5 Pistol MPN 81000477
$3400 shipped, no tax
New with original cardboard box with matching serial.
Includes factory H&K soft case, 2 - 30rd factory mags & all accessories, tools, etc.
Only selling to fund my MP5SD build project.
I also have 1 new Heckler...
Brand new Heckler & Koch 3-Position Retractable Stock for MP5
BUTTSTOCK, MP5, RETRACTABLE
UPC: 642230253728
MPN: 227901
MADE IN GERMANY
Received this straight from the H&K mothership, only unwrapped to take photos.
I take Zelle for payment
Free shipping from Oregon City, OR
No trades please
this is a brand new brace never been use. you can check the buffer. my form1 sbr stamp came in too early and got approve in 7 days! anyway i am trying to discard this brace since i have no use for it anymore. anyone out there looking for a pistol brace for a mp5 platform this is your deal..
🇵🇭...
Looking to trade or sell a brand new, never fired AP5 with SB Tactical HKPDW Brace (sold out everywhere) installed. Will come with 5 metal mags (1 MKE, 4 KCI Gen 2 (the good ones) in bags). These are not touched by Century, they're built by Turkish MKE with a license from H&K and built using...
Got a pretty new AP5 here, ive only shot about a mag thru it. Figured i would like an FAL more so id like to trade this for an FAL, DSA preferably. If you have any questions or offers feel free to shoot them over. I took the muzzle device off in a few photos because i think it looks better, but...
Been buying too much lately. Selling a brand new unfired AP5 Turkish MKE pistol. Comes with 1 magazine, box, papers, and SB Tactical adjustable “brace”.
*After calculating taxes you’ll have to pay, the $329 price tag on a new SB Tactical HKPDW arm brace (and assoc. tax), you are getting one...
I got a Turkish made (century imported) AP5 full size pistol that is unfired and new in box. Comes with the mp5-style collapsing arm brace as well.
Looking to trade for an AP5-M with non threaded barrel. To clarify, I’m looking for the model without a threaded barrel. If you want to trade let’s...
Beautiful pistol brace and one I really wanted but my stupid bubblegum didn’t realize that it wouldn’t fit my pistol because I have a K model… I’m neewww…
Will ship on your dime. Thank you.
twofive33fourone30fourtyfour
Will consider trades for:
-9mm ammo
-pistol/rifle mounted lights
-g17 iwb...