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piston driven
A free-piston engine is a linear, 'crankless' internal combustion engine, in which the piston motion is not controlled by a crankshaft but determined by the interaction of forces from the combustion chamber gases, a rebound device (e.g., a piston in a closed cylinder) and a load device (e.g. a gas compressor or a linear alternator).
The purpose of all such piston engines is to generate power. In the free-piston engine, this power is not delivered to a crankshaft but is instead extracted through either exhaust gas pressure driving a turbine, through driving a linear load such as an air compressor for pneumatic power, or by incorporating a linear alternator directly into the pistons to produce electrical power.
The basic configuration of free-piston engines is commonly known as single piston, dual piston or opposed pistons, referring to the number of combustion cylinders. The free-piston engine is usually restricted to the two-stroke operating principle, since a power stroke is required every fore-and-aft cycle. However, a split cycle four-stroke version has been patented, GB2480461 (A) published 2011-11-23.
Up for consideration is my new PWS MK116 PRO Rifle.
If you're not familiar with Primary Weapons Systems, they are well known for their accuracy, reliability and innovation. To my knowledge, they are the only company that builds a Long Stroke Gas Piston system in the AR platform. And they have...
This is outside of my discretionary spending at the moment, but IF I was aiming to buy a high end AR this would be one of my top choices. Price is for when added to cart.
https://gunprime.com/products/lwrc-international-ic-spr-5-56-nato-16-1-fluted-30-rd-pmag-magpul-sights?gd
*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...
So this is something I wasn't expecting to come together as fast as it did, and certainly not with the barrel/gas system it has. This was a long term project I was picking up the parts for one at a time, over time, and then suddenly was able to finish it with an über rare piston system and a...
Barrett Rec7 6.8spx with Burris XTC 312 extreme tactical illuminated scope. Short stroke piston system. Extras with magazines ammo and custom Pelican case. $3000 firm no trades serious injuries only. Camas. Contact me for more pictures.
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...
Sig Sauer SIG556 Classic 5.56mm rifle, piston-driven; in excellent condition; kept dry in storage case
No more than 150-200 rounds shot with it. Always cleaned and oiled.
Includes collapsible stock, laser pointer, tactical sling, stock grip/bipod mount, rail-mounted light, and battery-powered...
Issue:
One of the first world problems I have is shooting the AR suppressed and getting all that gas blowback in my face as well as having the chamber/BCG completley polluted in short fashion.
Question:
Has anyone here (assuming so) found a piston driven kit with adjustable gasblock to solve...
Bought brand new in spring of 2015, moved to alaska shortly after and it sat for 2 years. Moved back in 2017 and have not shot it since, sadly. Im an AK guy. Has a few mags through it. Iron sights. 3 mags. Soft Ar case. Incredible rifle, just not used at all. 18 inch barrel. 350 rounds of .223...
Hi all,
Selling my Adams Arms Mid Length Gas System AR-15. This was a project I did when I got home from my last deployment. I built it as a truck gun that would take a ton of abuse/dirt and still fire which is why I went with the Troy Battle Sights and a piston system.This is a complete...
Offering a sweet price of $650 for a piston driven AR-15 (add 3% for a card transaction). More time shooting, less time scraping carbon. Would trade for a Glock G41 MOS, a nice progressive reloading setup, or consider other options.
RIFLE SPECIFICATIONS:
• Mil-Spec Forged 7075-T6 Lower...
Looking to trade my Piston driven gen 2 Sig FDE for a quality compact 1911 .45 cal +$. Or a combo of guns. Wouldn't mind an LCR, Mossberg 500, lesser AR15 . It's in excellent condition. Comes with sling, vortex strikefire 2 red dot, magpul flip up sights and streamlight with magpul...