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piston
A piston is a component of reciprocating engines, reciprocating pumps, gas compressors and pneumatic cylinders, among other similar mechanisms. It is the moving component that is contained by a cylinder and is made gas-tight by piston rings. In an engine, its purpose is to transfer force from expanding gas in the cylinder to the crankshaft via a piston rod and/or connecting rod. In a pump, the function is reversed and force is transferred from the crankshaft to the piston for the purpose of compressing or ejecting the fluid in the cylinder. In some engines, the piston also acts as a valve by covering and uncovering ports in the cylinder wall.
Hello,
This is a brand new Sig 516 piston upper. Factory 14.5 not pinned or welded. Know your laws.
Has a safe scratch as seen in pics. Pics show fuss from a gun sock between rails.
New never fired or placed on lower.
Will ship where legal for $875
*Price drop*
Selling my Wolf A1 14.5 5.56 complete upper. Based on the T91 Service rifle for the Taiwanese Military. Handguard has been slightly modified to accommodate an Mlok Vertical foregrip, cantilever mount for mounting a weapon light, and a QD sling mount. Includes BCM grip, Cantilever...
I have a lightly used Sig Sauer MCX Virtus 11.5” barrel length pistol. I would be surprised if I put 200rds through it. It shows very light wear if you look close (probably not noticeable to most).
I love this gun and I’m only selling to finance another MCX build I’ve been working on for a...
$1000.
PWS MK116 MOD 1-P Rifle, BRAND NEW!! Including Factory Case.
16” Barrel with PWS Compensator, Caliber: .223 Wylde, Forward Assist,
PWS Long Stroke Piston System, 3 setting Adjustable Gas Regulator
PWS Enhanced Buffer Tube with ratchet lock castle nut and end plate set with built-in...
Selling a Dead Air Ghost/Wolfman piston, M14.5x1 LH thread pitch. Used, but in great condition. These retail for $89, but I'm only asking $50. Prefer cash, face-to-face in the Portland Metro area.
For sale is a brand new Superlative Arms .750 Clamp on Carbine Length Adjustable Piston Kit. Never used. Comes with an extra Op-Rod in Pistol length.
Paid $355 for kit and extra Op-Rod
Asking $280 or best offer
had it for about 5 months and ran 2 mags great shooter. This is a piston driven rifle from what I understand the upper is pretty rare. Only available on Saturdays but I am willing to deliver! Pm for more info or any questions you may have!!
$50 will go towards NWFA!!!!.
Specs:
14.5 pinned and...
Howdy, I have two AUGs and one needs to go. The one for sale is standard (Steyr mags) with an extended rail. It includes one 30 round magazine (not the 42 round one pictured, sorry), a Primary Arms Glx 2x prism scope, original boxes for the rifle and optic, original tools, and manuals. No...
Title says it all. Only looking for the upper.
Gen 1 or Gen 2 doesn't matter
Looking to trade although I may throw in some $$$ if the price is right
My trades can be found here and here
two06 - 9two9 - fivefour80
If you know, you know. The PWS MK111 Mod 2 is a long stroke gas piston upper with an adjustable gas block, resulting in extreme reliability and durability, especially if running suppressed. It has around 300 rounds through it and I’m only letting it go to fund other builds. Comes with the PWS...
For Sale is a very lightly Used and very HARD TO FIND Sig Sauer AR 516 Quad Rail Factory Hand Guard in great condition! No hardware, just the hand guard. This came off of my 516 piston upper. If you have any questions, please PM me.
Cash Only. No Trades. I will ship at Buyers Expense.
I have an 18” 223 wylde BRN180 complete upper.
piston upper with captured buffer springs. Means you can run a folding stock and no buffer tube with this upper.
Around 500 rounds through upper.
Does not come with lower or red dot.
Trades I’m looking for, LVPO, Glock(9mm), gucci AR parts, body...
Hello,
Up for sale is a brand new, never fired, Piston Driven POF Revolution in Burnt Bronze. I've had this rifle in a hard case (included, pictured below) for a year in a climate controlled space. It hasn't been fired and is in perfect condition - only selling because I have another kiddo on...
Like new PWS Mk216 long stroke piston AR10 with 16" barrel chambered in .308 Winchester, it has been well taken care of and has less than 40 rounds through it, there is just one minor blemish on the side of the receiver. The long stroke piston system is reliable, adjustable, and very soft...
Price: $450
Condition and package:
Close to new condition, total 300-400 rounds through it (tested with brass and steel cased), no problems at all.
Comes with all original parts and I can throw in a bag and the Lancer mag that came with it.
For the Samson Manufacturing Anti-Rotation handguard...